Nice! I would have it default to a nice looking pattern first to show it in use. Then a clear button would be useful. And finally I agree the drawing is anno

Nice! I would have it default to a nice looking pattern first to show it in use. Then a clear button would be useful. And finally I agree the drawing is annoying - just have them draw over things with white that they don't want! (have that as a clickable color beside the color selection, maybe with a few others too).