What designs or patterns would you paint around your home if you were the only one who
could see them?
What would you give to see extra colors? The world of the butterfly is a riot of color, shades
and hues that are invisible to the human eye but shout out to the pollinating insect the way
the bright red of a stop sign or brilliant sunset does to us. There are considerable advantages to being able to see more colors, as any tetrachromat will tell you.
Tetrachromacy refers to when an organism possesses four color receptors in the
eye. Most humans have only three (red, green, and blue), which gives us a healthy range of
seven million or so colors in the world around us. But this is only what most humans can differentiate; there are actually more colors out there. CONTINUE READING →