I think Kutter has a great idea. Acetone will not harm CC in the slightest. Neither will a sonic cleaner, unless there is some flakiness to the colors. I've seen that on one Helm's spur lever I had cased.

I think it must be the lacquer because case colors should never turn black by themselves.


_________
BrentD, (Professor - just for Stan)

[Linked Image from i.imgur.com]