[http://silvercity.sourceforge.net/ SilverCity] "''is a lexing package, based on Scintilla, that can provide lexical analysis for over 20 programming and markup languages''". Can be used for TracSyntaxColoring.

Version 0.9.7 recommended.
Version 0.9.6 [wiki:0.12/TracFaq@323#why-is-my-css-code-not-being-highlighted-even-though-i-have-silvercity-installed doesn't work] with Trac.

Starting with Trac [milestone:0.11], we recommend using [http://pygments.org/ Pygments] instead. SilverCity support has been removed in Trac [milestone:1.1.3].