Sass / Makefile in Thanks Roy theme

I'd like to fork the Thanks Roy theme to make some minor changes for my Omeka site (probably not any changes that anyone else would want). I'm trying to understand how the theme uses Sass. Is there a Makefile to update the stylesheet, or do I just run something like compass compile from the css directory?

Thanks.

It's the latter: just use compass compile or compass watch while in Thanks Roy's css folder, and you should be set.