Our long-ago ancestors saw two basic colors: light and dark. Today we see eleven (black, grey, white, purple, blue, green, yellow, orange, red, brown, pink). Tomorrow we will see more. Empirical Zeal on “color colonialism” and the odd pattern that societies follow in erecting “color boundaries”:
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Blue and green are similar in hue. Before the modern period, Japanese had just one word, Ao, for both blue and green. The wall that divides these colors hadn’t been erected as yet.
One of the first fences in this color continuum came from crayons. In 1917, the first crayons were imported into Japan… There were different crayons for green (midori) and blue (ao), and children started to adopt these names. But the real change came during the Allied occupation of Japan after World War II, when new educational material started to circulate. In 1951, teaching guidelines for first grade teachers distinguished blue from green, and the word midori was shoehorned to fit this new purpose.