That's fiery-tempered to you, NOT mean.
The links in the posts in the Gods, Graves and Glyphs list will take you to some sites that propose the notion that the ginger gene for redhair is an artifact of Neanderthal heritage as a result of the mixing of Cro-Magnon and the Neanderthals. Other traits may include autism and systic fibrosis.
Fascinating stuff.