Mille Fleur D'uccle: If breeding will you only get the Mille Fleur color?

[JodiLynn]

I have lots of chicks hatching out of some eggs from a friend. All of her hens and roos are the Mille Fleur color. Does this mean they will only produce chicks of that color? Should I add in another color if I plan to breed? I am new to this breed and I am still figuring out the genetics. Thanks!