After you've installed the extension, split diffs on public repos should highlight automatically. Here's an example https://github.com/danvk/dygraphs/pull/296/f

After you've installed the extension, split diffs on public repos should highlight automatically. Here's an example https://github.com/danvk/dygraphs/pull/296/files https://github.com/danvk/dygraphs/pull/296/files (the comments are red, keywords are blue, quotes are green, etc.) Source code here: https://github.com/danvk/github-syntax https://github.com/danvk/github-syntax