Animals see UV - flowers have patterns of UV colors on them which butterflies and bees and most animals can see. I dunno that it has much to do with the ROYGBV color spectrum.
Could be. But whatever the combination and permutation maybe those UV bands or whatever appear as yellow, blue or red to the human eye. I still assert that there is some combination of UV bands that calls to certain pollinators.
Oh God, Battle Hymn of the Republic.