Add CSS ID for each row on forum table.

Would it be possible to add CSS IDs for each table row on the top level forum page (/forum), perhaps setting the ID to the first word of the forum category name? I want to give each forum a seperate image, similar to the forums on http://www.demolicious.org/forums.php

This is the simplest way I can think of to add support for this. If other people would find it useful and I can find the time to patch and test it I'll follow this up in a week or two with my progress, assuming the maintainer is interested and doesn't beat me to it!