It's rigid but i was wondering why the colour was fading, and it has been 2 weeks. Wasn't recovering at allis it soft? If it is still rigid then there is nothing to worry about.
I had a reptile heat lamp and a uvb lighting for it.Please give us a pic of the whole setup as well as a complete description of how you are caring for it including lighting and diet. I have kept them in the past for about 10 years and had them from hatchling to 50 lb size.