I've been thinking about "the dress" for 10 years. Here's what I've learned. The dress of many colours: is it blue and black or white and gold? Women's Black White, Size L ined Active Dress, Size L by Gold Hinge 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 perception Long Black Prom Dress with Contrasting Beads PromGirl Black Hot Pink XSmall Dressgate: If you saw THAT dress as white your brain was working overtime