There is a lot of predjudice against redheads in Asia. The Japanese were brutal toward Americans with red hair unfortunate enough to be a POW. Usually they killed them.
My son was born with bright red hair but never had much problem with it, it has darkened over the years.
I do recall one episode though. He, my wife and I were in a resturant when a drunk guy staggered up to our table and started making rude comments about my son, who was sitting in a high chair. ("Who set your hair on fire?? That sort of stuff) Interestlingly, this was an hour or so after we left the hospital after my mom had passed away. We were just trying to decompress and here was this oaf- probably about 70 or so- his friends were trying to pull him away. I finally told him I was going to beat the holy crap out of him if he didnt leave my family alone, by then the resturant people had intervened.
Like I said that was about the only real case that I know of, but it was a doozey. Oh yes, we got a hefty discount on our bill.