By Maryann Makosiej Circa 2015, the image of a black and blue (or perhaps gold and white?) dress went viral on the Internet. Talk shows, office spaces, classrooms--everyone was incredulous in talking about it. How could we all have seen such different color pairings of the same image at the same time? Stacey Aston and Anya Hurlbert, two scientists at the Neuroscience Institute in the UK, have a few ideas. Color Constancy Color constancy is the theory that your perception of t