This is just my advice. I don't like ads that blend into oblivion. Many do, but I love a white background. I also would not use different colors for links on different blocks. Make them all the same. What I normally use is a white background and white border. If you like the title brown, keep it. You'll get others who swear it should blend. Sometimes they blend too much. Only after testing will you be able to tell. Stephen C
I think it would be better if you used a 250x250 block with text ads that would be aligned next to your content. I don't like the column of ads under "Pages." I think you have too many ads that are blending too much. It makes your website looks a little bit spammy.
I think it is nice color, placement. More important, all of yours ads blend with your site. Good Job!
I suggest that you add a rectangular ad on the content. That is where the visitors look when they want to read the article.