I was at my son's B13/15 Rec practice the other night. As it was ending a G10U team was coming in. I noticed one girl with earings and braided hair with three, wooden 1/2" long beads at the end of each strand of hair.
I had never met the dad. I walked over, introduced myself and asked him if we could talk for a second. I quietly informed him - I'm not sure what the league or Rec Refs will do, but here are the rules.
Mark - unlike your example, he was appreciative of the information as he said he didn't know. He was making the adjustments as I departed.
Sometimes, some of em get it! Sometimes.......