Not sure what kind of mix completely but maybe part lemon millefleur sablepoot? Theyre a bantam breed and the roos have that speckled tum. not sure where he got that rose comb though, or those itty bitty legs.
Mixed breed for sure, probably from mixed parents. He likely has Sebright or Wyandotte in him (explaining the rose comb) and Silkie in him (explaining the five toes), but it is very hard to be sure what breeds make up a mix.