Some AdSense publishers performed tests and reported that blending AdSense colors properly with your page will result in a higher CTR. Well, you should already know that a higher CTR means more clicks from your ads, and that translates to higher earnings. In your AdSense setup, you should already be familiar with the tool shown in the screen shot below. It allows you to configure the outputted colors of your ads.

Based on the options provided, you can actually assign colors to the Border, Title, Background, Text and URL.

Not included in the list is the font type used, which is also an important factor in the blending process. Here is a list of recommendations to get you started in customizing the AdSense that appears on your website. 

Now you have some guidance as to how to blend your ads with your website template’s colors. It is sometimes difficult to find out the exact color used by your template. Colors can be configured in Google AdSense using hex format (e.g. #FFFFFF for white color).

Bottom Line: As with borders, if you’re going to use a background different from yourpage background, make it a subtle one. In the case of the odd pinkish color in the top spot, the pages were actually the same color, so it blended well.