It's just a nicely colored normal. Issa (my ball) has that type of lightening effect going. He's getting lighter and lighter as he sheds. In fact, he's completely in blue now, so I can't give you a fresh picture shot. I'm looking forward to seeing how much he's changed with his next shed.
This isn't a great picture, and it's several months old, but you can kinda see the effect.
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