Something I noticed in my fires as they got older is scales turning white - it's especially prevalent on the neck and tail areas. Not sure if it's a fire thing or just a coincidence but both of my fires have picked up these white scales as they've aged and grown.
You can see some of the tail on this one as well as the neck:
This girl had very little white on her scales as a baby, now she's got the neck thing going on and white speckling all over:
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