The left buttons are background colors, and the right are pen colors. E to erase all, and space for pen size.
BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB BOB C
