I had to look up that term, and found it quite interesting, and in particular this bit.
https://en.wikipedia.org/wiki/Tetrachromacy
Tetrachromacy may also enhance vision in dim lighting...
Something similar to the 5e darkvision thing, though I wonder at how related it is to a few of the low light vision enhancing sensors we had on a few of our aircraft ... anyway, this thread was helpful to me.