I don't know a thing about Silkies or Seramas, I have Black Copper Marans, Cuckoo Marans and some EEs, so I can't tell the color of the Silkie. you're right it's either black or blue. Very pretty whatever color it is. On another note, how old are the Seramas? I'm just amazed at the cockeral - he just looks like a miniature rooster.