The bright yellow on her keeps changing to white more and more after every shed. Her last shed was 2 weeks ago. I went to feed her tonight and took a picture since the change is getting very noticeable. She used to have bright yellow down her back and on her head.
At this rate, she will have only white there eventually.
Any idea what is going on?

This picture is from several months ago and it shows the bright yellow on her back with a barley noticeable hint of white towards the head.


This is from tonight. You can see the signifigant amount of white replacing what used to be yellow.