http://www.pbs.org/wgbh/nova/israel/familylemba.html
“Many people are unaware of the Lemba, the black Jews of South Africa. Science has proven they’re true descendants of early Israelis. It sounds kooky, but it’s true. “
I know an Israeli whose father came from the small but ancient Chinese Jewish community. He looked somewhat asiatic, but with definite Jewish features. My own Israeli cousins have dark, olive complexions, although both sides of their family tree are from eastern and central Europe. Sometimes I suspect that something in our genetic makeup enables us to change complexion like chamelions, but only after one or more generations have passed.