Make up a color and describe how to recreate it mentally. Example: Blarf. This is the color that can be obtained by mixing the color of a particularly silent and deadly fart with the color of chunky vomit. (Use your imagination)
aw, I had a barf-related one pop into my head too, but I was going to call it Floornado - you drink until you fall over and the room spins and well you know the rest
