Originally Posted by
holytrousers
Interesting thoughts to look at cones/rods.
So, the rods are most sensitive to cyan/green light, and not particularly sensitive to red (which is a reason why red isn't the best color for night visibility).
However, one doesn't see by emitted light, but rather reflected light.
So, one should choose light that reflects with the most contrast in the given environment.
A unique lighting might be to use BLACK Light!!!