sorry, we rely on the Nuremberg Laws for guidance. So...blood tests, and just one ounce of black blood will do ya.
My Pennsylvania Dutch pastor took one of those genealogy tests and learned that he had 1% Nigerian ancestry. He had no clue about his tie to Africa. Shoot, if we're to believe the so-called experts, the origins of man are in Africa ..... So everyone in the pool! LOL!!
Personally, I believe the Bible which tells us that our first parents (Adam & Eve) lived in Eden which was located near Iraq and Iran around the Persian Gulf. As to their pigment/color, it's not important.