While many of us are not "color-blind", we are all color challenged. This is because we only have three cone-types, assuming you aren't a tetrachromat. I had a

While many of us are not "color-blind", we are all color challenged. This is because we only have three cone-types, assuming you aren't a tetrachromat. I had a thought experiment: Suppose you breakup visible light into six bands. You then create two filters based on these bands. One filter would pass only bands 1, 3, and 5. The other filter would pass bands 2, 4, and 6. Now suppose you put one filter over your left eye and the other filter over your right. Over time, could you learn to see the world in hexachromatic color ? Could you finally differentiate monochromatic yellow from composite red and green ? To digress further, I previously wrote a Google Cardboard App that randomly shows a red square in only the left eye, only in the right eye, or both eyes. Surprisingly I could not answer correctly if the red square was only shown to my left vs. my right or both. I am not sure if I could learn to do this. Perhaps it is a limitation of the visual system. I was hoping to introduce a new visual effect for VR headsets but it doesn't look promising.