I have been using VB for my forums and needed to try out this software. I have now setup my new forum with it to get the feel. Please check out mt site and give me a bit of feedback on what I have done to date.
Style looks prity good. I'd suggest changing and replacing some of the gradients that are better suited for light styles and alter them for gradients for dark styles. I noticed the light gradient that i feel doesn't suit in your notices for guests.
Also the "news bot" rank could do with having some margin-top: 15px so it doesn't sit flush with the avatar giving it some breathing space. Otherwise looking good and nice job.