Closure Stylesheets (GSS) in sublime text2

Should also work in Textmate, I've copied the CSS package and edited it to give syntax highlighting for .gss files here:

https://github.com/rhysbrettbowen/gss.sublime-package

You should create a new folder under Packages (you can get there by going to the sublime text 2 menu -> preferences -> Browse Packages....) called "GSS". Restart sublime text and away you go. So far there is highlighting for:

@def
@defmixin
@mixin
uppercase variables (hopefully you're only using uppercase for variables)
functions (both CSS function and @mixin functions)
@defmixin function variables

Any feedback about improvements would be great!