white = 255, 255, 255
yellow = 255, 255, 0
cyan = 0, 255, 255
red = 255, 0, 0
green = 0, 255, 0
blue = 0, 0, 255
black = 0, 0, 0
violet = 255, 0, 255

# https://en.wikipedia.org/wiki/Web_colors
skyblue = 135, 206, 235