It works because the system is faulty in the same way our eyes are faulty, we basically have sensors for three main wavelengths and derive every color we percei

It works because the system is faulty in the same way our eyes are faulty, we basically have sensors for three main wavelengths and derive every color we perceive from a mix of those three, check this out: https://en.wikipedia.org/wiki/Color_vision#Physiology_of_color_perception https://en.wikipedia.org/wiki/Color_vision#Physiology_of_col... https://en.wikipedia.org/wiki/Trichromacy https://en.wikipedia.org/wiki/Trichromacy