When I got my Millie, they were suppose to have come from a Mille coop, I bought the eggs last year...and his group did all look like Milles. But when I took him and breed him with my Mille and calico hens in which I might add came from the same Millie place but at different times.it all depends on which way the mille fleur evolved, whether it came from wheaten, partridge, or other color bases... if you have one with wheaten base and breed to a partridge base, the only thing that's consistent is the mottled.
that's why some peoples chicks are colored differently than others. mine are on a partridge line, so most chicks come out a golden brown color, while other people get more buff chicks, or other colors too for that matter.
Now Like I said I'm getting penguins. Not all the eggs are penguins, I would say 4 out of 5 are penguins leaving me with that ONE Mille, very frustrating since I'm trying to build up my Mille Coop..