Decision Making Biases in Group: Is the Dress White and Gold or Blue and Black? Applied Social Psychology (ASP) The Pennsylvania State University Dress colour mystery solved? Expert says we're ALL RIGHT and here's why The Mirror A decade ago, The Dress united and divided us. It couldn't happen now. Poynter It's eight years since the blue black white gold dress went viral. 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