I have 2 black silkies & 2 partridge showgirls all about 6 weeks old. I've been offered a 6 week old bearded silkie rooster from a breeder. they've been 'sex tested' by a lab. My question is color. They have black, partridge, lavender or splash. What would be the best cross with my flock? I think black & partridge would produce black or partridge chicks with a mix of silkies & showgirls Doesn't black & splash produce 100% blue? What would you get with a partridge/ splash cross, a black/ lavender & partridge/ lavender cross?