The light follows your mouse. Click to create pixels. E to erase pixels. Left and Right Arrows to change pixel color. Space to change light amount. S to stop light movement. Up and Down Arrows to change ghost effect. B to change background. G and H to show and hide grid and variables. Can be used for art, games, really anything that can use lighting. Get creative! Remix so that others can see your creations! Also suggest ideas to grow this test, it could be a lot of help.
Random lighting test I made for fun. Kind of just improvised everything.