What color dress?

Photo dresses appeared on the Internet has caused quite a stir on the Internet. The photograph shows a woman's dress, but what color, no one really can not say. It's hard to say what caused this effect, but the question "What color dress?" - People give very different answers, the most common among them - white and gold, black and blue. So, what color dress?

Author says that actually dress blue-black, and producer thought the release of this dress in white and gold color.