Click to draw. Press space to clear the board. To change colors, look in the top left corner and press the "show controls" button. Press numbers to change to the color they are assigned to. Click the "hide controls" button to hide the color chart.
Sorry, doesn't work on mobile, I'm working on that. Check out my other games! I'm having a game competition! Look here for more details! https://scratch.mit.edu/projects/924417933