I just was wondering how often you change the colors of your ads? From my personal experience with Adsense, I think changing the Color and the Placement of the ads every once and a while would lower your CTR and Also lower ur revenue. What do u think?
Despite your studies, you are completely wrong. For example, a forum has visitors who regularly browse through the threads and no-change in AD color would make those users pretty much AD blind. It's not just a coincidence the DP adsense unit in the right top corner changes colors. I'm sure that the owner of this forum came to the same conclusion as I have on my forums: It's better to use multiple colors, than one color.
I try to keep them in accordance with the back ground. When the background changes, so do the colors.
I never change the colors, they blend with the site. Placements change rarely, if I get a good idea or see a get idea on another site I will try it, other than that, Ihave them about as effectively placed and colored as I think is possible.