For Michael Jackson, color wasn't an issue, he could alternate between white and black.
If they could 3D print bones, it would be great for some people. I remember working at the Hall of Justice dispatch area, there was a gal receptionist that was born with short arms. She had to lean into the phone to pick up the handset. It didn't bother her, she was real upbeat and tough with a great personality. I think this technology could enable her to obtain longer arms. Doctors are currently lengthening kids legs by repeatedly breaking the bones and spacing the fragments apart for new bone to grow together, a very lengthy and painful process. That timeframe can be greatly reduced by growing large fragments in the lab, then inserting them in a child's legs to bond together separated bone fragments.
MJ: "Excuse me, Officer, am I Black or White?"
Officer: "You're under arrest."
MJ: "I guess I am black, after all."
-From "In Living Color".