Please read the manual: space to draw, mouse t move, b to switch between erase whole screen and pen, up and down arrow to switch colour, w a s d e and q are so saturation, brightness and transparency. 1, 2 and 3 are to change what you want to draw on. Enjoy!
Thanks to Mocha_dreams for making me curator to take inspiration from it. Note: I use Australian spelling so don't blame me for the spelling of colour (which can be 'color' in American English)
