Package epydoc :: Package docwriter :: Module html_css |
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# Source Code for Module epydoc.docwriter.html_css

      1  #
      2  # epydoc.css: default epydoc CSS stylesheets
      3  # Edward Loper
      4  #
      5  # Created [01/30/01 05:18 PM]
      6  # $Id: html_css.py 1634 2007-09-24 15:58:38Z dvarrazzo $
      7  #
      8
      9  """
     10  Predefined CSS stylesheets for the HTML outputter (L{epydoc.docwriter.html}).
     11
     12  @type STYLESHEETS: C{dictionary} from C{string} to C{(string, string)}
     13  @var STYLESHEETS: A dictionary mapping from stylesheet names to CSS
     14      stylesheets and descriptions.  A single stylesheet may have
     15      multiple names.  Currently, the following stylesheets are defined:
     16        - C{default}: The default stylesheet (synonym for C{white}).
     17        - C{white}: Black on white, with blue highlights (similar to
     18          javadoc).
     19        - C{blue}: Black on steel blue.
     20        - C{green}: Black on green.
     21        - C{black}: White on black, with blue highlights
     22        - C{grayscale}: Grayscale black on white.
     23        - C{none}: An empty stylesheet.
     24  """
     25  __docformat__ = 'epytext en'
     26
     27  import re
     28
     29  ############################################################
     30  ## Basic stylesheets
     31  ############################################################
     32
     33  # [xx] Should I do something like:
     34  #
     35  #    @import url(html4css1.css);
     36  #
     37  # But then where do I get that css file from?  Hm.
     38  # Also, in principle I'm mangling classes, but it looks like I'm
     39  # failing.
     40  #
     41
     42  # Black on white, with blue highlights.  This is similar to how
     43  # javadoc looks.
     44  TEMPLATE = """
     45
     46  /* Epydoc CSS Stylesheet
     47   *
     48   * This stylesheet can be used to customize the appearance of epydoc's
     49   * HTML output.
     50   *
     51   */
     52
     53  /* Default Colors & Styles
     54   *   - Set the default foreground & background color with 'body'; and
     55   *     link colors with 'a:link' and 'a:visited'.
     56   *   - Use bold for decision list terms.
     57   *   - The heading styles defined here are used for headings *within*
     58   *     docstring descriptions.  All headings used by epydoc itself use
     59   *     either class='epydoc' or class='toc' (CSS styles for both
     60   *     defined below).
     61   */
     62  body                        { background: $body_bg; color: $body_fg; }
     63  p                           { margin-top: 0.5em; margin-bottom: 0.5em; }
     64  a:link                      { color: $body_link; }
     65  a:visited                   { color: $body_visited_link; }
     66  dt                          { font-weight: bold; }
     67  h1                          { font-size: +140%; font-style: italic;
     68                                font-weight: bold; }
     69  h2                          { font-size: +125%; font-style: italic;
     70                                font-weight: bold; }
     71  h3                          { font-size: +110%; font-style: italic;
     72                                font-weight: normal; }
     73  code                        { font-size: 100%; }
     74  /* N.B.: class, not pseudoclass */
     75  a.link                      { font-family: monospace; }
     76
     77  /* Page Header & Footer
     78   *   - The standard page header consists of a navigation bar (with
     79   *     pointers to standard pages such as 'home' and 'trees'); a
     80   *     breadcrumbs list, which can be used to navigate to containing
     81   *     classes or modules; options links, to show/hide private
     82   *     variables and to show/hide frames; and a page title (using
     83   *     <h1>).  The page title may be followed by a link to the
     84   *     corresponding source code (using 'span.codelink').
     85   *   - The footer consists of a navigation bar, a timestamp, and a
     86   *     pointer to epydoc's homepage.
     87   */
     88  h1.epydoc                   { margin: 0; font-size: +140%; font-weight: bold; }
     89  h2.epydoc                   { font-size: +130%; font-weight: bold; }
     90  h3.epydoc                   { font-size: +115%; font-weight: bold;
     91                                margin-top: 0.2em; }
     92  td h3.epydoc                { font-size: +115%; font-weight: bold;
     93                                margin-bottom: 0; }
     94  table.navbar                { background: $navbar_bg; color: $navbar_fg;
     95                                border: $navbar_border; }
     96  table.navbar table          { color: $navbar_fg; }
     97  th.navbar-select            { background: $navbar_select_bg;
     98                                color: $navbar_select_fg; }
     99  table.navbar a              { text-decoration: none; }
    100  table.navbar a:link         { color: $navbar_link; }
    101  table.navbar a:visited      { color: $navbar_visited_link; }
    102  span.breadcrumbs            { font-size: 85%; font-weight: bold; }
    103  span.options                { font-size: 70%; }
    104  span.codelink               { font-size: 85%; }
    105  td.footer                   { font-size: 85%; }
    106
    107  /* Table Headers
    108   *   - Each summary table and details section begins with a 'header'
    109   *     row.  This row contains a section title (marked by
    110   *     'span.table-header') as well as a show/hide private link
    111   *     (marked by 'span.options', defined above).
    112   *   - Summary tables that contain user-defined groups mark those
    113   *     groups using 'group header' rows.
    114   */
    115  td.table-header             { background: $table_hdr_bg; color: $table_hdr_fg;
    116                                border: $table_border; }
    117  td.table-header table       { color: $table_hdr_fg; }
    118  td.table-header table a:link      { color: $table_hdr_link; }
    119  td.table-header table a:visited   { color: $table_hdr_visited_link; }
    120  span.table-header           { font-size: 120%; font-weight: bold; }
    121  th.group-header             { background: $group_hdr_bg; color: $group_hdr_fg;
    122                                text-align: left; font-style: italic;
    123                                font-size: 115%;
    124                                border: $table_border; }
    125
    126  /* Summary Tables (functions, variables, etc)
    127   *   - Each object is described by a single row of the table with
    128   *     two cells.  The left cell gives the object's type, and is
    129   *     marked with 'code.summary-type'.  The right cell gives the
    130   *     object's name and a summary description.
    131   *   - CSS styles for the table's header and group headers are
    132   *     defined above, under 'Table Headers'
    133   */
    134  table.summary               { border-collapse: collapse;
    135                                background: $table_bg; color: $table_fg;
    136                                border: $table_border;
    137                                margin-bottom: 0.5em; }
    138  td.summary                  { border: $table_border; }
    139  code.summary-type           { font-size: 85%; }
    140  table.summary a:link        { color: $table_link; }
    141  table.summary a:visited     { color: $table_visited_link; }
    142
    143
    144  /* Details Tables (functions, variables, etc)
    145   *   - Each object is described in its own div.
    146   *   - A single-row summary table w/ table-header is used as
    147   *     a header for each details section (CSS style for table-header
    148   *     is defined above, under 'Table Headers').
    149   */
    150  table.details               { border-collapse: collapse;
    151                                background: $table_bg; color: $table_fg;
    152                                border: $table_border;
    153                                margin: .2em 0 0 0; }
    154  table.details table         { color: $table_fg; }
    155  table.details a:link        { color: $table_link; }
    156  table.details a:visited     { color: $table_visited_link; }
    157
    158  /* Fields */
    159  dl.fields                   { margin-left: 2em; margin-top: 1em;
    160                                margin-bottom: 1em; }
    161  dl.fields dd ul             { margin-left: 0em; padding-left: 0em; }
    162  dl.fields dd ul li ul       { margin-left: 2em; padding-left: 0em; }
    163  div.fields                  { margin-left: 2em; }
    164  div.fields p                { margin-bottom: 0.5em; }
    165
    166  /* Index tables (identifier index, term index, etc)
    167   *   - link-index is used for indices containing lists of links
    168   *     (namely, the identifier index & term index).
    169   *   - index-where is used in link indices for the text indicating
    170   *     the container/source for each link.
    171   *   - metadata-index is used for indices containing metadata
    172   *     extracted from fields (namely, the bug index & todo index).
    173   */
    174  table.link-index            { border-collapse: collapse;
    175                                background: $table_bg; color: $table_fg;
    176                                border: $table_border; }
    177  td.link-index               { border-width: 0px; }
    178  table.link-index a:link     { color: $table_link; }
    179  table.link-index a:visited  { color: $table_visited_link; }
    180  span.index-where            { font-size: 70%; }
    181  table.metadata-index        { border-collapse: collapse;
    182                                background: $table_bg; color: $table_fg;
    183                                border: $table_border;
    184                                margin: .2em 0 0 0; }
    185  td.metadata-index           { border-width: 1px; border-style: solid; }
    186  table.metadata-index a:link { color: $table_link; }
    187  table.metadata-index a:visited  { color: $table_visited_link; }
    188
    189  /* Function signatures
    190   *   - sig* is used for the signature in the details section.
    191   *   - .summary-sig* is used for the signature in the summary
    192   *     table, and when listing property accessor functions.
    193   * */
    194  .sig-name                   { color: $sig_name; }
    195  .sig-arg                    { color: $sig_arg; }
    196  .sig-default                { color: $sig_default; }
    197  .summary-sig                { font-family: monospace; }
    198  .summary-sig-name           { color: $summary_sig_name; font-weight: bold; }
    199  table.summary a.summary-sig-name:link
    200                              { color: $summary_sig_name; font-weight: bold; }
    201  table.summary a.summary-sig-name:visited
    202                              { color: $summary_sig_name; font-weight: bold; }
    203  .summary-sig-arg            { color: $summary_sig_arg; }
    204  .summary-sig-default        { color: $summary_sig_default; }
    205
    206  /* Subclass list
    207   */
    208  ul.subclass-list { display: inline; }
    209  ul.subclass-list li { display: inline; }
    210
    211  /* To render variables, classes etc. like functions */
    212  table.summary .summary-name { color: $summary_sig_name; font-weight: bold;
    213                                font-family: monospace; }
    214  table.summary
    215       a.summary-name:link    { color: $summary_sig_name; font-weight: bold;
    216                                font-family: monospace; }
    217  table.summary
    218      a.summary-name:visited  { color: $summary_sig_name; font-weight: bold;
    219                                font-family: monospace; }
    220
    221  /* Variable values
    222   *   - In the 'variable details' sections, each varaible's value is
    223   *     listed in a 'pre.variable' box.  The width of this box is
    224   *     restricted to 80 chars; if the value's repr is longer than
    225   *     this it will be wrapped, using a backslash marked with
    226   *     class 'variable-linewrap'.  If the value's repr is longer
    227   *     than 3 lines, the rest will be ellided; and an ellipsis
    228   *     marker ('...' marked with 'variable-ellipsis') will be used.
    229   *   - If the value is a string, its quote marks will be marked
    230   *     with 'variable-quote'.
    231   *   - If the variable is a regexp, it is syntax-highlighted using
    232   *     the re* CSS classes.
    233   */
    234  pre.variable                { padding: .5em; margin: 0;
    235                                background: $variable_bg; color: $variable_fg;
    236                                border: $variable_border; }
    237  .variable-linewrap          { color: $variable_linewrap; font-weight: bold; }
    238  .variable-ellipsis          { color: $variable_ellipsis; font-weight: bold; }
    239  .variable-quote             { color: $variable_quote; font-weight: bold; }
    240  .variable-group             { color: $variable_group; font-weight: bold; }
    241  .variable-op                { color: $variable_op; font-weight: bold; }
    242  .variable-string            { color: $variable_string; }
    243  .variable-unknown           { color: $variable_unknown; font-weight: bold; }
    244  .re                         { color: $re; }
    245  .re-char                    { color: $re_char; }
    246  .re-op                      { color: $re_op; }
    247  .re-group                   { color: $re_group; }
    248  .re-ref                     { color: $re_ref; }
    249
    250  /* Base tree
    251   *   - Used by class pages to display the base class hierarchy.
    252   */
    253  pre.base-tree               { font-size: 80%; margin: 0; }
    254
    255  /* Frames-based table of contents headers
    256   *   - Consists of two frames: one for selecting modules; and
    257   *     the other listing the contents of the selected module.
    258   *   - h1.toc is used for each frame's heading
    259   *   - h2.toc is used for subheadings within each frame.
    260   */
    261  h1.toc                      { text-align: center; font-size: 105%;
    262                                margin: 0; font-weight: bold;
    263                                padding: 0; }
    264  h2.toc                      { font-size: 100%; font-weight: bold;
    265                                margin: 0.5em 0 0 -0.3em; }
    266
    267  /* Syntax Highlighting for Source Code
    268   *   - doctest examples are displayed in a 'pre.py-doctest' block.
    269   *     If the example is in a details table entry, then it will use
    270   *     the colors specified by the 'table pre.py-doctest' line.
    271   *   - Source code listings are displayed in a 'pre.py-src' block.
    272   *     Each line is marked with 'span.py-line' (used to draw a line
    273   *     down the left margin, separating the code from the line
    274   *     numbers).  Line numbers are displayed with 'span.py-lineno'.
    275   *     The expand/collapse block toggle button is displayed with
    276   *     'a.py-toggle' (Note: the CSS style for 'a.py-toggle' should not
    277   *     modify the font size of the text.)
    278   *   - If a source code page is opened with an anchor, then the
    279   *     corresponding code block will be highlighted.  The code
    280   *     block's header is highlighted with 'py-highlight-hdr'; and
    281   *     the code block's body is highlighted with 'py-highlight'.
    282   *   - The remaining py-* classes are used to perform syntax
    283   *     highlighting (py-string for string literals, py-name for names,
    284   *     etc.)
    285   */
    286  pre.py-doctest              { padding: .5em; margin: 1em;
    287                                background: $doctest_bg; color: $doctest_fg;
    288                                border: $doctest_border; }
    289  table pre.py-doctest        { background: $doctest_in_table_bg;
    290                                color: $doctest_in_table_fg; }
    291  pre.py-src                  { border: $pysrc_border;
    292                                background: $pysrc_bg; color: $pysrc_fg; }
    293  .py-line                    { border-left: $pysrc_sep_border;
    294                                margin-left: .2em; padding-left: .4em; }
    295  .py-lineno                  { font-style: italic; font-size: 90%;
    296                                padding-left: .5em; }
    297  a.py-toggle                 { text-decoration: none; }
    298  div.py-highlight-hdr        { border-top: $pysrc_border;
    299                                border-bottom: $pysrc_border;
    300                                background: $pysrc_highlight_hdr_bg; }
    301  div.py-highlight            { border-bottom: $pysrc_border;
    302                                background: $pysrc_highlight_bg; }
    303  .py-prompt                  { color: $py_prompt; font-weight: bold;}
    304  .py-more                    { color: $py_more; font-weight: bold;}
    305  .py-string                  { color: $py_string; }
    306  .py-comment                 { color: $py_comment; }
    307  .py-keyword                 { color: $py_keyword; }
    308  .py-output                  { color: $py_output; }
    309  .py-name                    { color: $py_name; }
    310  .py-name:link               { color: $py_name !important; }
    311  .py-name:visited            { color: $py_name !important; }
    312  .py-number                  { color: $py_number; }
    313  .py-defname                 { color: $py_def_name; font-weight: bold; }
    314  .py-def-name                { color: $py_def_name; font-weight: bold; }
    315  .py-base-class              { color: $py_base_class; }
    316  .py-param                   { color: $py_param; }
    317  .py-docstring               { color: $py_docstring; }
    318  .py-decorator               { color: $py_decorator; }
    319  /* Use this if you don't want links to names underlined: */
    320  /*a.py-name                   { text-decoration: none; }*/
    321
    322  /* Graphs & Diagrams
    323   *   - These CSS styles are used for graphs & diagrams generated using
    324   *     Graphviz dot.  'img.graph-without-title' is used for bare
    325   *     diagrams (to remove the border created by making the image
    326   *     clickable).
    327   */
    328  img.graph-without-title     { border: none; }
    329  img.graph-with-title        { border: $graph_border; }
    330  span.graph-title            { font-weight: bold; }
    331  span.graph-caption          { }
    332
    333  /* General-purpose classes
    334   *   - 'p.indent-wrapped-lines' defines a paragraph whose first line
    335   *     is not indented, but whose subsequent lines are.
    336   *   - The 'nomargin-top' class is used to remove the top margin (e.g.
    337   *     from lists).  The 'nomargin' class is used to remove both the
    338   *     top and bottom margin (but not the left or right margin --
    339   *     for lists, that would cause the bullets to disappear.)
    340   */
    341  p.indent-wrapped-lines      { padding: 0 0 0 7em; text-indent: -7em;
    342                                margin: 0; }
    343  .nomargin-top               { margin-top: 0; }
    344  .nomargin                   { margin-top: 0; margin-bottom: 0; }
    345
    346  /* HTML Log */
    347  div.log-block               { padding: 0; margin: .5em 0 .5em 0;
    348                                background: $log_bg; color: $log_fg;
    349                                border: $log_border; }
    350  div.log-error               { padding: .1em .3em .1em .3em; margin: 4px;
    351                                background: $log_error_bg; color: $log_error_fg;
    352                                border: $log_error_border; }
    353  div.log-warning             { padding: .1em .3em .1em .3em; margin: 4px;
    354                                background: $log_warn_bg; color: $log_warn_fg;
    355                                border: $log_warn_border; }
    356  div.log-info               { padding: .1em .3em .1em .3em; margin: 4px;
    357                                background: $log_info_bg; color: $log_info_fg;
    358                                border: $log_info_border; }
    359  h2.log-hdr                  { background: $log_hdr_bg; color: $log_hdr_fg;
    360                                margin: 0; padding: 0em 0.5em 0em 0.5em;
    361                                border-bottom: $log_border; font-size: 110%; }
    362  p.log                       { font-weight: bold; margin: .5em 0 .5em 0; }
    363  tr.opt-changed              { color: $opt_changed_fg; font-weight: bold; }
    364  tr.opt-default              { color: $opt_default_fg; }
    365  pre.log                     { margin: 0; padding: 0; padding-left: 1em; }
    366  """
    367
    368  ############################################################
    369  ## Derived stylesheets
    370  ############################################################
    371  # Use some simple manipulations to produce a wide variety of color
    372  # schemes.  In particular, use th _COLOR_RE regular expression to
    373  # search for colors, and to transform them in various ways.
    374
    375  _COLOR_RE = re.compile(r'#(..)(..)(..)')
    376
    377 -def _set_colors(template, *dicts):
    378      colors = dicts[0].copy()
    379      for d in dicts[1:]: colors.update(d)
    380      return re.sub(r'\$(\w+)', lambda m:colors[m.group(1)], template)
    381
    382 -def _rv(match):
    383      """
    384      Given a regexp match for a color, return the reverse-video version
    385      of that color.
    386
    387      @param match: A regular expression match.
    388      @type match: C{Match}
    389      @return: The reverse-video color.
    390      @rtype: C{string}
    391      """
    392      rgb = [int(grp, 16) for grp in match.groups()]
    393      return '#' + ''.join(['%02x' % (255-c) for c in rgb])
    394
    395 -def _darken_darks(match):
    396      rgb = [int(grp, 16) for grp in match.groups()]
    397      return '#' + ''.join(['%02x' % (((c/255.)**2) * 255) for c in rgb])
    398
    399  _WHITE_COLORS = dict(
    400      # Defaults:
    401      body_bg                 =  '#ffffff',
    402      body_fg                 =  '#000000',
    403      body_link               =  '#0000ff',
    404      body_visited_link       =  '#204080',
    405      # Navigation bar:
    406      navbar_bg               =  '#a0c0ff',
    407      navbar_fg               =  '#000000',
    408      navbar_border           =  '2px groove #c0d0d0',
    409      navbar_select_bg        =  '#70b0ff',
    410      navbar_select_fg        =  '#000000',
    411      navbar_link             =  '#0000ff',
    412      navbar_visited_link     =  '#204080',
    413      # Tables (summary tables, details tables, indices):
    414      table_bg                =  '#e8f0f8',
    415      table_fg                =  '#000000',
    416      table_link              =  '#0000ff',
    417      table_visited_link      =  '#204080',
    418      table_border            =  '1px solid #608090',
    419      table_hdr_bg            =  '#70b0ff',
    420      table_hdr_fg            =  '#000000',
    421      table_hdr_link          =  '#0000ff',
    422      table_hdr_visited_link  =  '#204080',
    423      group_hdr_bg            =  '#c0e0f8',
    424      group_hdr_fg            =  '#000000',
    425      # Function signatures:
    426      sig_name                =  '#006080',
    427      sig_arg                 =  '#008060',
    428      sig_default             =  '#602000',
    429      summary_sig_name        =  '#006080',
    430      summary_sig_arg         =  '#006040',
    431      summary_sig_default     =  '#501800',
    432      # Variable values:
    433      variable_bg             =  '#dce4ec',
    434      variable_fg             =  '#000000',
    435      variable_border         =  '1px solid #708890',
    436      variable_linewrap       =  '#604000',
    437      variable_ellipsis       =  '#604000',
    438      variable_quote          =  '#604000',
    439      variable_group          =  '#008000',
    440      variable_string         =  '#006030',
    441      variable_op             =  '#604000',
    442      variable_unknown        =  '#a00000',
    443      re                      =  '#000000',
    444      re_char                 =  '#006030',
    445      re_op                   =  '#600000',
    446      re_group                =  '#003060',
    447      re_ref                  =  '#404040',
    448      # Python source code:
    449      doctest_bg              =  '#e8f0f8',
    450      doctest_fg              =  '#000000',
    451      doctest_border          =  '1px solid #708890',
    452      doctest_in_table_bg     =  '#dce4ec',
    453      doctest_in_table_fg     =  '#000000',
    454      pysrc_border            =  '2px solid #000000',
    455      pysrc_sep_border        =  '2px solid #000000',
    456      pysrc_bg                =  '#f0f0f0',
    457      pysrc_fg                =  '#000000',
    458      pysrc_highlight_hdr_bg  =  '#d8e8e8',
    459      pysrc_highlight_bg      =  '#d0e0e0',
    460      py_prompt               =  '#005050',
    461      py_more                 =  '#005050',
    462      py_string               =  '#006030',
    463      py_comment              =  '#003060',
    464      py_keyword              =  '#600000',
    465      py_output               =  '#404040',
    466      py_name                 =  '#000050',
    467      py_number               =  '#005000',
    468      py_def_name             =  '#000060',
    469      py_base_class           =  '#000060',
    470      py_param                =  '#000060',
    471      py_docstring            =  '#006030',
    472      py_decorator            =  '#804020',
    473      # Graphs
    474      graph_border            =  '1px solid #000000',
    475      # Log block
    476      log_bg                  =  '#e8f0f8',
    477      log_fg                  =  '#000000',
    478      log_border              =  '1px solid #000000',
    479      log_hdr_bg              =  '#70b0ff',
    480      log_hdr_fg              =  '#000000',
    481      log_error_bg            =  '#ffb0b0',
    482      log_error_fg            =  '#000000',
    483      log_error_border        =  '1px solid #000000',
    484      log_warn_bg             =  '#ffffb0',
    485      log_warn_fg             =  '#000000',
    486      log_warn_border         =  '1px solid #000000',
    487      log_info_bg             =  '#b0ffb0',
    488      log_info_fg             =  '#000000',
    489      log_info_border         =  '1px solid #000000',
    490      opt_changed_fg          =  '#000000',
    491      opt_default_fg          =  '#606060',
    492      )
    493
    494  _BLUE_COLORS = _WHITE_COLORS.copy()
    495  _BLUE_COLORS.update(dict(
    496      # Body: white text on a dark blue background
    497      body_bg                 =  '#000070',
    498      body_fg                 =  '#ffffff',
    499      body_link               =  '#ffffff',
    500      body_visited_link       =  '#d0d0ff',
    501      # Tables: cyan headers, black on white bodies
    502      table_bg                =   '#ffffff',
    503      table_fg                =  '#000000',
    504      table_hdr_bg            =  '#70b0ff',
    505      table_hdr_fg            =  '#000000',
    506      table_hdr_link          =  '#000000',
    507      table_hdr_visited_link  =  '#000000',
    508      table_border            =  '1px solid #000000',
    509      # Navigation bar: blue w/ cyan selection
    510      navbar_bg               =  '#0000ff',
    511      navbar_fg               =  '#ffffff',
    512      navbar_link             =  '#ffffff',
    513      navbar_visited_link     =  '#ffffff',
    514      navbar_select_bg        =   '#70b0ff',
    515      navbar_select_fg        =   '#000000',
    516      navbar_border           =  '1px solid #70b0ff',
    517      # Variable values & doctest blocks: cyan
    518      variable_bg             =   '#c0e0f8',
    519      variable_fg             =  '#000000',
    520      doctest_bg              =   '#c0e0f8',
    521      doctest_fg              =  '#000000',
    522      doctest_in_table_bg     =   '#c0e0f8',
    523      doctest_in_table_fg     =  '#000000',
    524      ))
    525
    526  _WHITE = _set_colors(TEMPLATE, _WHITE_COLORS)
    527  _BLUE = _set_colors(TEMPLATE, _BLUE_COLORS)
    528
    529      # Black-on-green
    530  _GREEN = _COLOR_RE.sub(_darken_darks, _COLOR_RE.sub(r'#\1\3\2', _BLUE))
    531
    532  # White-on-black, with blue highlights.
    533  _BLACK = _COLOR_RE.sub(r'#\3\2\1', _COLOR_RE.sub(_rv, _WHITE))
    534
    535  # Grayscale
    536  _GRAYSCALE = _COLOR_RE.sub(r'#\2\2\2', _WHITE)
    537
    538  ############################################################
    539  ## Stylesheet table
    540  ############################################################
    541
    542  STYLESHEETS = {
    543      'white': (_WHITE, "Black on white, with blue highlights"),
    544      'blue': (_BLUE, "Black on steel blue"),
    545      'green': (_GREEN, "Black on green"),
    546      'black': (_BLACK, "White on black, with blue highlights"),
    547      'grayscale': (_GRAYSCALE, "Grayscale black on white"),
    548      'default': (_WHITE, "Default stylesheet (=white)"),
    549  #    'none': (_LAYOUT, "A base stylesheet (no color modifications)"),
    550      }
    551