>The first female pharaoh was described in contemporary texts as being blonde.

Never heard this claim, but it's a weak argument to rest on if we believe it to be true.

Naturally blonde and red haired black people arent that uncommon. Furthermore, if we are being honest, every genetic trait on this planet is represented in a subset of the African population.

Every variation of hair color, eye color, skin color, eye lid, etc...naturally occur among the population.