In 2015, a photograph of a dress went viral, dividing viewers over whether its colors were blue and black or white and gold. This optical illusion highlighted differences in human color The Blue Black or White Gold Dress and Questioning Reality Psychology Today Conni Asym Midi Dress Arctic Blue Dark Choc Midi Dresses Girls with Gems Science explains how time spent outdoors colors your view of #thedress Los Angeles Times TheDress one year on eight things we learned from the viral phenomenon Social media The Guardian