Yes, the brown are simply chocolates. When they have new feathers after a molt they can be shiny green like the black onesThank you, Buck. I have three more pictures that might help. The "pied" are due to the white and the "barred" is the stripes on the chest, correct? Some of mine have a lot of brown. I read black muscovies have the green, but nothing about brown. Is the brown typical? (The breeder had a wide variety of muscovies, including one that was silver/lavendar in color, but he also had wild ducks visiting now and then, so he really didn't know what mixes he had.)
The muscovy we had when I was in high school was white with a spot of black on its head and part of its wings and tail were black. I was surprised when I went to get these six that they were black. I actually like the darker colors and think they're really great ducks.