Personally, it looks like you've left the body open. Maybe I'm missing something, but you have navigational links around the top of the board that looks a little out of place.
I like the colors, I know some people are pretty nit-picky about them but they have been used tastefully in my opinion.
I'm not sure about the vB experiences placement, nor its size, and the image ranks are a little too big. I like the horizontal postbit, however its looking a little funny when people dont have avatars, which also goes back to the vb experience.
Other then that, the whole things looking pretty good, I might sign up and post a bit if I get some spare time. Do you have a style I could use to access the board via my cell/mobile?
I know vBulletin has a nasty habbit of not loading for my phone