I'm liking this new skin a lot, but I hate how blurry the post text is (which I see has already been mentioned). The colours are fine, the problem is just the font - it doesn't include a bitmap version (or is too new; I've heard Windows ignores embedded bitmaps for all but a few legacy fonts) and is not hinted well enough for it to render cleanly at this size.
Playing around in Firebug, I disabled the Titillium Web font and kept just the "Verdana, Arial, Helvetica, sans-serif" part of the CSS and the forum looks lovely and clear (I'd probably change the size to be a little smaller though).
Edit: It took me too long to see that to get to the other account settings you have to mouse-over the "Modify Profile" bit. Maybe put a little down arrow icon next to things that open menus on mouse-over? I've set it to use sidebars (I'm so glad that's an option!) because I just know that I'll forget again.