10 years since THE DRESS blew up Internet. Two thirds of people saw white and gold. It's an optical illusion caused by weird lighting and an overexposed background. It Is actuallylly blue and black. #thedress Yellow Dress Original Gold And White Black And Blue Optical Illusion: Dress Colour Debate Goes Global Cream, A Line Designer Dress with Gold Beadwork Bodice and V Neck Here's why people saw the dress differently.