Ruby, Rails, Firefox, Anime, Mac
Just a quick note of something I found out while reading Transcending CSS: all the themes (message styles, contact list styles, etc.) in Adium are crafted with our old friends XHTML, CSS and JS. I opened up a few AdiumXtras to see for myself and true enough,
<div>s and CSS rules make up the style. Very smart decision by the Adium developers.