This 8 by 8 grid generates a number based off of which ones are white and which ones are blue. Click/tap on a square to swap it's color. Swap all the squares with the swap button. (First on the right) Change all the squares to black with the X button. (Middle one) Randomize the squares with the random button. (Bottom button) There are also some presets that Steven9x0 made in the top right corner.
Credit to Steven9x0 I switched the colors from black and white to red and blue.