Chris from the Google AdSense team posted a thread in the Google AdSense Help forum asking for feedback on Google's color palette.
Chris said, "I'm curious to know more about what you think about color palettes, and how you use them. Got any thoughts you can share?"
Here is a picture of the tool within the new AdSense interface:
Chris went on to add that any feedback he receives will be passed to the right people at Google. He said as a disclaimer that he can't promise all the suggestions would be implemented. Chris said:
I'll collect the most interesting feedback as a way to arm myself for meetings with the rest of our product development team. Your feedback may influence our feature development roadmap!
Forum discussion at Google AdSense Help.