“Every perception of color is an illusion, we do not see colors as they really are. In our perception they alter one another.”
THE RELATIVITY OF COLOR A color has many faces, and one color can be made to appear as two different colors. Here it is almost unbelievable that the left small and the right small squares are part of the same paper strip and therefore are the same color. And no normal human eye is able to see both squares — alike.