This is the first time I'm hearing of this. Did not know they reached the states. Good to know that people are interested in this colour. Do you have photos of your birds?
How old are these birds? I'll have to agree with my friend Basty, especially if these birds are 8 weeks or older. As for the porcelain, yes they do look to be porcelain. In brahmas it's confusing, but this is what a porcelain looks like. It's mostly in Europe though (I don't think anyone has...