Japan Tokyo Sanye Cafe boss always have different feelings of color using eye, save the coffee and earn more profit for the purpose of materials. He asked more than 30 friends to drink   each; the same cup of coffee, but the coffee cup of the color of the different measurements, respectively, coffee, red, cyan and yellow, the 4 kinds of coffee, coffee, coffee, coffee, and so on.

The results of

The boss came up with the