The wiring is being done with the feeds going to the ceiling fans in 3 different rooms, and a 12/2 wire "switch loop" being dropped from each ceiling fan to the switch for that fan. I know that the white wire in the switch loop gets coded black on both ends using black tape.
But, here's the question: The person who is doing the wiring plan is saying something about ending up with "two black wires" in the ceiling box, and that one of the black wires needs to be coded as white(?). I really can't follow what he is saying. He did say that all of the white wires are connected together as they should be, but that there is somehow an extra black wire that will confuse the next person who opens up the box because it should be white. He claims he called a licensed electrician friend of his who told him he needs to spray paint that black wire white. He said the electrician told him that's just how it is, and you need to get yourself a can of white spray paint and paint that wire white. Supposedly, the electrician said, "That's just how it's done, and that's what we do".
Unfortunately, I don't understand any of this, so I probably can't explain it any better. But, my question is, with the wiring plan that I described below (using the switch loop method), is it possible that the ceiling boxes end up with a black wire that now needs to be coded (painted) as white?