How "The Dress" Became an Illusion Unlike Any Other Scientific American 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 The Great Dress Debate: White and Gold or Blue and Black? 10 years ago, this dress was posted on social media causing a viral debate on whether it was blue and black or white and gold. The phenomenon revealed differences in human color