It's St Patrick's Day, and we're green! This is the test of what we've been trying to achieve over the past month: to make our articles independent of the underlying wiki theme. I changed the Theme using Special:ThemeDesigner, and copied a few colors to MediaWiki:Wikia.css from the resulting .css , and that was it. If you find pages with colors that look off, please report them here.
Oh, and if you have a better suggestion for the background, I'm listening. ;-)