Women's Black Dress Pants Express Black Pants SHEIN 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 How does a black and blue dress sometimes appear white and gold? The Brains Blog ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive