Real Colour of Zebra

Have you seen a zebra? What do you think the real colour of it? White with black stripes or black with white stripes? Well, to me white is more appealing than black so I would say the real colour of a zebra is white with black stripes.

But apparently, my graphic and design lecturer didn't think so. Even though he said that this is very subjective topic and there is no right or wrong in determining the colour, I'm sure there is some scientific research about this since obviously we are not the first people on earth to have curiosity about the colour of a zebra.