Sorry, but I do not see brassy. If you only breed to the real dark copper males on a continous basis, you will start getting more and more Mahogany colored males. You will get Straw, copper and mahogany regardless since that is normal.Snowbird, don't you think that color looks brassy, though? I think in one of the pics he is right next to one that has color that looks more correctly copper to me. His color is the lightest of all the ones I have.
This male has way better type than any you have showed. What we have to remember is you buy the feed and take care of them so should pick what you like best of all. There sure would be a cage here for a young male as good as this one.