Colors at the top are the colors you can choose for your circles. If you click the color, the color wouldn't appear on the current circle, but it would appear in the next circle! Click eraser to erase! ( I think that's one of those 'common sense' thing, but maybe you don't know ) P.S #1 : I made this in 10 minutes. P.S #2 : I had about 10 bugs? I guess?
Actually, I learnt how to draw a circle and fill it when I saw a bug in the ping pong game I was trying to make. Try making a Pac-man!
