Another Felix

my cousin can't see black on white so they print his homework on green paper

I'm partially red-green colourblind, but that's only for the duller shades at a distance. We can generally tell the difference between the bright red and green easily enough. Plus, memorizing the position is also a thing. In my place, green lights are also always shaped like an arrow, so it's easier still.

My dad is red-green colorblind, but all the lights here are red on top green on the bottom so I figure he just memorizes it