A great DVD for you would be Jim Smircich's "Smircich Makes Beads" volume 1. He uses intense black stringers, but pulls them out into fine almost hair-like and "scribbles" them onto the surface of ivory. Then heats that slowly and this makes an interesting "web" effect.
Somebody correct me if I'm wrong, I think that's how he did it. I wish I didn't sell my DVD, and I would love to purchase it again!
Copper green reacts nicely with the turquoises and petroleum (opaque teal) green. You will see a lighter line of copper green surrounding the brighter copper green in the middle.