Honestly, I'm not seeing the serama stance at all, sorry. I see no resemblance to seramas other than being very small short legged bantams-they look like short legged cubalaya or sumatra bantams, with a hint of asil type blood, to me. Sorry, maybe I'm blind?
You all could make them, you know. They would not be the real thing, of course, but would look just as cool...
Here is how I would do it... Ohiki x Ameraucana bantam-all offspring would be bearded and pea combed. Keep the short legged offspring only. Call this "A". Then-Asil or Cornish bantam x...
They look a lot like Cubalaya bantams to me, but with shorter legs. Also resemble Ga Cua to some extent. I'm sure you don't have to dub their combs. I like the heavier heads and eye color as well.