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Red, orange, yellow, green, blue, and indigo are all just as real. But purple? Well ... When you look at in-between colors (like teal, for example), your brain averages out how many cones of ...
From early childhood, we’ve been taught to recognize the colors of the rainbow—red, orange, yellow, green, blue, indigo, and violet—using the iconic acronym ROYGBIV. We see them in nature ...