Reds and purples on the other hand are from anthocyanins, created in the autumn in the leaf. (Also responsible for the color in plums, strawberries and red apples.) The anthocyanins are actually sunscreen and coldscreen for leaves and allow them to survive reality a little bit longer than they would have as innocent green little leaves.
Maybe we’ll all turn a little redder as we get older and our green youth is drained away...
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