As beginners we should not mix tail types. It might destroy its original form (in offspring). Always breed CT x CT, HM x HM and so on. Unless of course you don't mind ending up with untidy, unsymmetrical fins.
I would suggest you breed your copper to Black (not melano). You may come up with black copper. Copper (I think) originated from the green line. So if you cross breed green with copper, you would get mostly green. I'm not sure about blue though. I have never crossed bred copper to blue. The cambodia comes from blue. So you can breed your avatar to a blue female. Just remember, once a red gene is used, its difficult to get rid of it. You would get bi colored or even multi colored offspring (not solid colors like your female).
I hope this helps. Good luck.