Blue and Black Houndstooth Dress Socks Over the Calf L The Ballroom Blacks Black & Powder Blue Polka Dot Dress Sock Over The Calf The Ballroom Blacks Black & Powder Blue Polka Dot Dress Sock Over The Calf 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