I just stumbled on this game on Android Market yesterday. It´s a free game with paid expansions: http://www.blendoku.com/
The idea is to sort colors making harmonic "palettes". There are different levels of difficulty and it uses several designing/color theory principles. I guess it will be great for those who have issues with matching different kits and realising how to create harmonic compositions with several colors - If I were you, I´d try it out! I´m hooked!
Oh, and you don´t need to be a skilled gamer. All you need to do is drag and drop.
Who else is playing?