Different colors/images for each category?

[Mikhailtech]

I'm wondering if there's a plugin/template modification (hack)/option/whatever for this.

Basically I have a message board with 3 main sections that I need to differentiate. I got the separate icons for each forum working, but now I'm wondering if it's possible to use different color schemes for each category/forum. Go here: http://www.femaledge.com you'll see sections 1/2/3. I want section one to be a certain color scheme (let's say light purples), section 2 to be another color scheme (greens), and section 3 something else (maybe fuscia or browns). How do I do this? TIA