You press B and open a menu. Then you draw on things with your mouse. But that's only once you've selected a color. But some colors aren't usable. Why? I don't know. How many colors are there? Not sure but there's about 40 little bubbles that hold color. Don't know which ones to click on or why. I get that it's a puzzle solver but this isn't a 4.4 Star game. Sorry
