Looks really good and a lot of effort put into it. I love the design. Usually what turns me off right away about a site is a bad design but that isn't the case. Great colors and nothing is cluttered.
One minor thing that sort of diminishes the design a bit is that some of the icons are vB default and don't match, such as:

and the quote, multi quote, online/offline, etc. Not a big deal but it would look much nicer with matching buttons.
There are some things wrong with your style like quick reply missing editor buttons and when I click on thread tools, search this thread, etc, the drop down menu goes out of alignment like:
Overall though you've done a great job so far.