First off, I'm loving the concept of the style so far. But A few things are making me scratch my head. One would be the text-shadow, it looks really well in the container, but remember it's not gonna look so well on profiles with brighter user-customisations, it'll relate to their usernames as well as friends, last ten visitors etc. I think the background image would look better if it went the whole way down the sides rather than fading into the gray, but it might not, just a suggestion as the ackground is fairly dead and makes the theme somewhat dull. The main header is fantastic though, I love it. I look forward to seeing the buttons too.
I also noticed as I was browsing with the theme you had a container bar fixed at the bottom of the screen (may be gone now) holding links, I for one was never a big fan of position:fixed container bars as I found them a tad annoying, so maybe if you had the option to swicth them off or something if you were going to implement it?
As for the header, it might be nice to see some links in the space on the top left side much like the button quick links you did for Route 167.
At any rate, the style is looking fanmtastic and I look forward to seeing it closer to release!