-
The google ad words seems to really call itself out. It's really the only place you've used such a dark color in the design so it creates an unbalance. Also, do they have one that would fit your column a little better? The width of it seems too thin where it's at.
Possibly a little more breathing room in areas. Things seem really tight up against the edges and it can create a very busy look.
I love the color and art style, I think it fits your style well.
I noticed this as I was typing, and I don't think it's too critical - The search / mail / rss feed icons at the top right could maybe be pulled up to line up more with the logo and then the categories / tags box could be brought up in line with the navigation area.

Yeah, I noticed that after a while, I'm thinking to change the it to plain colors. I'll also look if there's one that has wider column. I'm considering your idea of bringing categories / tags box up a bit, thanks a lot ;)