I like this game. Here are some suggestions. I would prefer to only have to select the hue (the angle in the circle). That is, the game would prepare the correct saturation (distance from the center) and brightness (the vertical bar) for me. My score would be the difference in degrees between my answer and the correct answer. It would make the game more enjoyable to a wide audience. It would also make the score easier to understand than a percentage (the percentage means nothing to me). Finally, I would like to have the name of the company written in text under the logo for cases where I want to know who it belongs to.