In general, a good job and well done to those concerned.
I do agree with those mentioning font/text size and/or brightness issues. The background seems very bright and the text is small/hard to read comfortably against it. The colour scheme itself is fine though, it's just that the text isn't strong enough against it. Perhaps my eyes are just getting old... but still, I'm having to lean a bit into the screen to read and that's going to get tiring over time.
A related point: the page numbers at the top/bottom of a thread feel smaller/more squeezed together than before, making it harder to click to the next page. I'm not sure if they're actually smaller, or it's an effect of being hard to read them because of their relative weakness against the background.
EDIT - Just remembered a quick workaround: FF (and I'm sure most browsers) lets you set the font text zoom independently of the rest of the page zoom, so I've ramped up the font zoom to 115% (the page was already on 120%) and now I can read again. :)
EDIT 2
a) Actually, it's not a default option in FF; it's because I already had the NoSquint add-on installed. It's great.
b) If you have NoSquint, you can also play around with the Text and Background colours of the page too, so if it's just a contrast issue for you, simply set the Text to black instead of the default grey and problem completely solved without having to zoom at all. Personally, I prefer text zooming as going black changes other aspects of the new design (eg it changes usernames to black too).
