Oranges are called oranges because before them, there was no word for orange.

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Zikten posted...
Maybe when we go to other planets, they might have colors that don't exist on Earth
We likely won't be able to perceive them (or any such colors here) unless our eyes evolve another cone.
"Be good to yourself, because everyone else in the world is probably out to get you." - Dr. Harleen Quinzel