You don't have to use this stylesheet to view the forum. You can change it by replacing EQ2 in the web address with WOW. It will use the WoW style sheet that way. There is probably an easier way to do it, but I don't know what that is.
I know some folk may be tired of hearing this so fair warning but, back on OGaming we had selectable skins and user customizable color schemes for both the forums and the main site itself. The structure of the site here probably isn't set up to have that utility integrated easily, but it was a nice feature and it would be slick to reintroduce here somehow.