Space to switch costumes.
This is an old project I made that was a pen texture engine that could take numerical code and use it to draw pixel art. I didn't release it when I finished because I tried to make a counterpart editor to draw textures, but it crashed adobe flash and would not work. It uses values of how wide and tall the image is, how large it will be displayed, 8 color values (9 if you count transparent), and 5 shading values.