While by no means a guru, I do run a small
vb based board and have done a fair amount of mods to it. I'd be happy to help if I can.
In terms of themes, I really like the colors you have here. Make reading and navigation very easy on the eyes. Some of the themes that are out there seem to try to make up visually for a lack of content on the board. I think there is more than enough content here!
If you haven't already (but I'm sure you have) check out vbadvanced.com's CMPS. It's free and can be used to make up for some places that stock
VB boards lack.
Good luck with the change over and please let me know how I can help.