Looks like bright has won it (vB4 beta just got released) I'm still deciding whether to work on it separately and then attempt a DB merge or to just fuck about on the live site.
How about instead of having just 1 theme make it so people can choose between a few themes, iv'e seen it done on a few forums.
Easier said than done Also I've decided to go with a dark-ish theme - anything would be better than orange/tf2 colours on a bright background: http://forums.tf2maps.net
If that happens, it makes x times more work for Dark (depending on how many themes are chosen), and it would be harder to maintain all different themes if something large were to be added/changed/removed from the site.
This. Also atm I think I'll be porting most of our current theme, since we have a full set of psd assets for it and my attempts at simply recolouring vB4 look utterly awful.