I have a few silver/blue/brown Americanas and I just love the color and would like to continue to breed that particular color does anyone have some that are almost all silver and no brown? is the brown something that can be bred out so there is just the silver color? anyone have any pics of birds like these? do you think I could continue the color with a white Araucanas rumpless roo and the silver hens? or should I get a silver roo as well?