I just noticed this now and it really glows underneath her UVB bulb. She is very active and just got done eating and running around on my bed. She is in a 40 gallon tank with a warm spot of 98 degrees and a cool spot of 76, her humidity is a bit high but that's just because of some rain we had yesterday.
She hasn't shed in a while but I read that it is normal for juvenile beardies to not shed as much as babies. I have also noticed this color on her shoulders and also her back, I'm hoping it is just her colors coming in as she isn't even a year old yet. (She will be in September)
Any help would be greatly appreciated~! I tried to get some better pics but she insisted on running around all over the place lol.