It would be interesting to know how the silver sparkle bits occurred. Looks like a re-wrap is in order but those will be great drums and worth much more than you paid for them.
That had me thinking too. I went and took a close look and the "gold" sparkle is composed of small hex shaped silver glitter covered with an amber translucent film. If you run a finger over the silver part you can feel the texture of the sparkles but it's smooth and gold when the outer layer is applied. Depending how bad the wrap is (looks like it needs re-done) I'll try to separate a portion of the amber and silver and get a photo.