Stop let me cope, Musa Pbuh was CushiticLol, it was a quick google search.
People often misinterpret things what ancient people said. If they describe their fellow ethnics as being dark, it is based on their local context and not a global one. Moses may have been darker than other Jews, Muhammed may have been lighter than other Arabs, but it doesn't follow from there that Moses looked like a Habesha and Muhammed looked like a Ruski.

