Nadya wrote:

There is a red form of melanin. And melanin is on the same strand of DNA
as hormones that affect behavior. More melanin, more adrenalin, which
speeds reflexes, but also increases impulsivity. But higher melanin is
found with lower seratonin, which sharpens senses, but makes for
restless sleep, and they wake up grouchy.

So- Redheads really do tend to be more exciting, but also more
challenging and exasperating lovers.

I forget the name, but a Russian geneticist sentenced to Siberian fox
farm noted how hard they were to handle and their violence made scars in
the black fur... still used for Russian hats. So, he began breeding just
the most docile black foxes. And after 12 generations was successful.

I've seen the video. The kits are playful and charming, just like
puppies. the only problem is, they are not all black anymore.

I could discuss black melanin in hominids, but then I'd be called racist.