A 291-day-old retina. Our ability to see colors develops in the womb. Now scientists have replicated that process, which could help accelerate efforts to cure colorblindness and lead to new treatments for diseases.
Johns Hopkins University
This is a re-creation of a color plate from Interaction of Color, by Josef Albers. The two X's are are exactly the same — it's the different backgrounds that make them look like very different colors.
Source: Josef Albers Interaction of Color