Important: this project is deprecated, since GitHub supports this natively: https://github.com/blog/1932-syntax-highlighted-diffs
Chrome Extension syntax highlight diffs on GitHub:
The project is based on jquery-syntaxhighlighter, which is itself based on Google's Prettify.
My fork of jquery-syntaxhighlighter is included inline in the project. It essentially removes borders on the highlighted pre elements.
To build the extension, just run
$ ./package.shCreated by Daniel Ribeiro.
Released under the MIT License: http://www.opensource.org/licenses/mit-license.php
https://github.com/danielribeiro/github-diff-highlight-extension