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There isn't much overlap with the blue cone. See picture at https://en.wikipedia.org/wiki/Cone_cell

Makes sense thanks.

Also the actually intersection of the green and red curves looks more like 3M Safety Green to me (the yellowish hi-vis vests). I wonder if that’s how they developed that color

Doesn't the fact that they are UV reactive help them glow and appear brighter? If they used the same color with a non-UV reactive material, would they still seem as bright?

This makes me wonder: how would the world look if we genetically engineered our eyes (and brains too I guess) to have cones more evenly-spaced in the spectrum, perhaps even with 4 cones instead of 3?

> perhaps even with 4 cones instead of 3?

You may enjoy reading https://en.wikipedia.org/wiki/Tetrachromacy#Humans

It seems that we've found one woman who is actually capable of using this (ctrl-f for subject cDa29)

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