--- /dev/null
+#!/usr/bin/perl
+# Ikiwiki text colouring plugin
+# Paweł‚ Tęcza <ptecza@net.icm.edu.pl>
+package IkiWiki::Plugin::color;
+
+use warnings;
+use strict;
+use IkiWiki 2.00;
+
+sub import { #{{{
+ hook(type => "preprocess", id => "color", call => \&preprocess);
+ hook(type => "format", id => "color", call => \&format);
+} #}}}
+
+sub preserve_style ($$$) { #{{{
+ my $foreground = shift;
+ my $background = shift;
+ my $text = shift;
+
+ $foreground = defined $foreground ? lc($foreground) : '';
+ $background = defined $background ? lc($background) : '';
+ $text = '' unless (defined $text);
+
+ # Validate colors. Only color name or color code are valid.
+ $foreground = '' unless ($foreground &&
+ ($foreground =~ /^[a-z]+$/ || $foreground =~ /^#[0-9a-f]{3,6}$/));
+ $background = '' unless ($background &&
+ ($background =~ /^[a-z]+$/ || $background =~ /^#[0-9a-f]{3,6}$/));
+
+ my $preserved = '';
+ $preserved .= '<span class="color">';
+ $preserved .= 'color: '.$foreground if ($foreground);
+ $preserved .= '; ' if ($foreground && $background);
+ $preserved .= 'background-color: '.$background if ($background);
+ $preserved .= '</span>';
+ $preserved .= '<span class="colorend">'.$text.'</span>';
+
+ return $preserved;
+
+} #}}}
+
+sub replace_preserved_style ($) { #{{{
+ my $content = shift;
+
+ $content =~ s!<span class="color">((color: ([a-z]+|\#[0-9a-f]{3,6})?)?((; )?(background-color: ([a-z]+|\#[0-9a-f]{3,6})?)?)?)</span>!<span class="color" style="$1">!g;
+ $content =~ s!<span class="colorend">!!g;
+
+ return $content;
+} #}}}
+
+sub preprocess (@) { #{{{
+ my %params = @_;
+
+ # Preprocess the text to expand any preprocessor directives
+ # embedded inside it.
+ $params{text} = IkiWiki::preprocess($params{page}, $params{destpage},
+ IkiWiki::filter($params{page}, $params{destpage}, $params{text}));
+
+ return preserve_style($params{foreground}, $params{background}, $params{text});
+} #}}}
+
+sub format (@) { #{{{
+ my %params = @_;
+
+ $params{content} = replace_preserved_style($params{content});
+ return $params{content};
+} #}}}
+
+1
--- /dev/null
+\[[!template id=plugin name=color core=0 author="[[ptecza]]"]]
+
+This plugin can be used to color a piece of text on a page.
+It can be used to set the foreground and/or background color of the text.
+
+You can use a color name (e.g. `white`) or HTML code (e.g. `#ffffff`)
+to define colors.
+
+## examples
+
+Here the foreground color is defined as a word, while the background color
+is defined as a HTML color code:
+
+ \[[!color foreground=white background=#ff0000 text="White text on red background"]]
+
+The background color is missing, so the text is displayed on default
+background:
+
+ \[[!color foreground=white text="White text on default color background"]]
+
+The foreground is missing, so the text has the default foreground color:
+
+ \[[!color background=#ff0000 text="Default color text on red background"]]