“Beauty is in the eye of the beholder.” So wrote Margaret Wolfe Hungerford in her 1878 novel “Molly Bawn.” But what about those eyes? Does it change matters if the eyes of one beholder don’t see things the same way as another? If they see colors differently – or perhaps see fewer or more subtle divisions in these colors? Perhaps they see into portions of the electromagnetic spectrum that others can’t perceive, which allows them to see patterns that are invisible to those lacking such perceptual capabilities?