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Re: colour

If mammals lost the original enzymes to make bright skin colors,
at least some have re-evolved such enzymes. I'm thinking particularly
of primates, and the bright red (and blue? correct me if I'm wrong,
I'm typing from memory) sexual displays some of them use. And the
bright orange ("red") hair of some humans probably needs to be considered.

Vicki Rosenzweig
New York, NY