I thought I read somewhere that crossing a laced bird to a solid would produce all black chicks? Is this correct? Maybe it is a Polish but just an "oops" from a solid and a laced mixing? Aren't creveceour's typically bearded? Not that familiar on that particular tophat variety. 

i baught my hen because i told told the Roo was polish.. looks like ill have to take him to the sale and try to find a roo that IS polish