He is indeed a cross. The Color looks Partridge or Gold Laced x Black. Also the center toe doesn't look too feathered on the farther back foot. .
Ok, so I shouldn't be surprised when odd things pop up? I'm just your average backyard chicken owner, I wanted pretty chickens. Not looking for show quality, and would never hatch eggs from any of these guys. I've noticed a few flaws in them. And it helps when I can come on here and figure out what's going on, instead of guessing.
I wonder if he'll keep the splotches or if they'll molt out later? All my others have pretty standard coloring..man I wish I got a lemon, the ladies Rooster was just beautifully colored.
It has been my experience that with the black boys that were a cross to a millie fleur that with each feather change they get more colors. There is nothing wrong with hatching some chicks if you don't mind some pretty crosses. All depends on what you want. I had a very randy and secretive millie fleur rooster running around here for a while.