I guarantee you loads of blacks will come away believing that Cleopatra was black. So will millions of other Americans. This show has its own built in racial controversy, so I expect it to be a hit.
This is pop culture and will overwhelm any real history that takes some brains (though not much) and effort.
Even now, I am sure millions of blacks here believe we had slavery until 100 years ago. Or less!!
That's the whole point.