Viral 'Blue and Black or White and Gold' dress marks 10 years YouTube Dress' illusion used in domestic violence PSA wzzm13.com This explains how the blue black white gold dress illusion was possible. But it doesn't explain why some people saw it one way and some saw it the other, and no one seemed to see ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive 10 years since THE DRESS blew up Internet. Two thirds of people saw white and gold. Its an optical illusion caused by weird lighting and an overexposed background. It Is actuallylly blue and black.