Nice site. The layout is good except in my opinion there is too much blank space in the center. Maybe you need some content there. The color scheme is good.
Good clean layout, I do agree that the middle section needs some content. I would maybe insert some graphics of some sort to maybe give it a little more contrast.
either darken the site text color to black like that of adsense text or lighten the adsense text color to match the site also make the left side links the same color as adsense links or vice-versa _