Do you mean a complete repaint, or a repair of the damaged paint?
Complete repaints (where you change the original paint of the dragon to look like a completely different scheme) are actually a bit of a legal issue for Windstone Editions and gently discouraged. It’s a sensitive topic.
The good news is, if your Emperor just has some damage on his chest, there are people on this forum who are just masterful at repairs! They can make your dragon look brand new. 🙂