Click on the squares to change their color. There is white, black, red, orange, beige, yellow, green, light blue, dark blue, purple, brown, grey, horizontal line and vertical line.(In that order.) Press r to reset the grid. Hover above a square and press space to change that square to white. There are different background settings. You can see them by pressing Q and E. I added these because it was very troublesome to click the tiles until they are the color of your background. I also removed the outlines to make it look better, but you can still see the outlines on orange, yellow and grey.
Part of it is also mobile. Full screen recommended. If you are clicking too much, then hold down the mouse when you click the squares. You can also click in between the squares to change both of their colors.
