Mister ...
Quote from Arkarian:
Can do that with pretty much everything in doze. The files that hold the colors have to be stored somewhere, and you'd better believe you can access and change them.
What? No worship/bowing smilies?
EDIT: Did a google search. Figures that it'd be something so easy. :|
Anyways, just to give people an idea of what it is I'm doing, here's a shortened version of my Black XP Taskbar, completely recolored in MS Paint. I might post a full screenshot when I finish editing everything else.