Metallic coloring

> One of the problems I've always had when painting with metallic

Not exactly the same, but Humbrol produces a "Metalcote" range of metallic
enamels that can be polished. The darker colours (e.g.Steel) work quite well.
The lighter ones (Alumininum, for example) don't give quite such a good
effect, IMO. But maybe I haven't quite developed the right technique.

Greetings Karl Heinz