Interesting! Off topic, I read that Aztecs and Mayans had lighter skin and hair and they went through the "Age of Black Hair", which occurred 6,000 years ago, like many American Indian went through, which is why they have darker skin and hair color. Many American Indians were lighter skined and have the same blood type you see in Caucasians. Some have the same rate of Rh negative blood in Basques and Celts, most notably Mapuches, Incas, and Mayans. In fact, it was common for Indians to have blonde and red hair. Everytime I see Indians, they look more Caucasian to me, rather than Mongoloid. I would suspect Indians first came as Ainu and Polynesian and later Cro-Magnon man.