During my bp's last shed cycle, she lost a line of pigment on her head. I also believe she's turning grey but I think I'm just crazy. Wondering If anyone knows whats going on. She's seems fine, just missing color. It's not as drastic as the "IMG" bp color change though.
Hopefully the link works, I included a pic of her shed and her head:
http://imgur.com/a/7sjfJ