[Cinnamon Girl]

That's right! In later years, Moses had a black wife. Aaron & his sister, Miriam, criticized Moses for this. God struck Aaron and Miriam with the inability to speak. What could be clearer than that example? (Moses had to pray for them for it to be lifted!)

You're right that the tradition is that Tzipporah, Moshe's first and only wife was dark skinned, but there is no source for the idea that Miriam or Aharon said anything negative about her color EVER. In fact, the tradition is that Miriam says Tzipporah is extremely beautiful and righteous. Miriam was punished for the sin of loshon hara (evil gossip) for talking to Aharon about her concerns that Moshe was not spending enough time with his wife, because of his work as a prophet. Her sin was comparing him to other prophets, thereby not recognizing his greatness. Miriam was striken with tzaaras, which is translated as a kind of leprosy of the skin. But it was temporary.

[Chris Talk]

Moses had taken an Ethiopian wife as a sort of prize after his successful military campaign against that country.

We are never told that she accompanied him to Mitanni, however, possibly he had divorced her or she had died.

Tsiporah ["Birdie"] was a Midianite/Mitanni princess, the daughter of the ruler of that country, and thus a Caucasian, though perhaps sunburned...? This country lay in the NW part of Saudi Arabia today, and I think she probably resembled the women of that region.

[Yeah, I know, they wear hijab so how do I know how they look. LOL.]