article_snippet: (CNN)The Salvation Army in South Africa is using #thedress to spread a different kind of message about the colors black and blue.
article_snippet: An ad shows a model wearing a white and gold dress resembling the one that caused an Internet meltdown last week as people debated whether the garment wasn't actually black and blue instead.
article_snippet: The model also sports bruises on her face and body.
article_snippet: The caption reads "Why is it so hard to see black and blue?
article_snippet: The only illusion is if you think The only illusion was her choice.
article_snippet: The dress, which is sold by the British company Roman, is actually black and blue.
article_snippet: Julia Haller, the ophthalmologist-in-chief at Wills Eye Hospital in Philadelphia, explained that different people saw different colors because eyes perceive colors in a slightly different way, based on genes.
highlights_snippet: #thedress was an Internet sensation: Is #thedress blue and black or white and gold?
  