Current Egyptians are Arabs, not the ancient kind. The Egyptians did not use white paint to portray people, and the colors they used were to show status. They did use dark paint for black Africans.
Current Coptic Egyptians (10% of the population) are the descendants of the Pharaohs; the majority of Egyptians today are the result of the Arab invasion (when Arabs spilled out of the peninsula and made their way across North Africa, eventually invading & holding much of Spain). Tribes like the Berbers were the previous North African populations.