I don't have any experience with orps bred to APA standards, but hear that the English are a lot wider. I think the English orps call for a smaller head than the American standard, and I really like broader heads on a bird. That's the only thing about the English standard I don't think I'll shoot for.
It's entirely possible that the blue is a later hatch. Especially if you are talking about the lighter blue. The first time I saw it was when it was out exploring the world.
As far as chicken mills... unfortunately they are around. There's a local guy who buys birds and takes them to swaps and keeps them in horrible conditions. There are others, too. You can look at the BYC auction page and see pretty quickly who ALWAYS has auctions up for up to ten different breeds.
I think it would be incredibly hard to raise birds responsibly AND earn your living with them.
I see the smaller heads on these compared to the APA ones I have (but I think they may have come from a "chicken mill"). I too like the bigger heads but really like the bigger eyes, legs and chests on the ones from you. The only standard I want to breed to would be "my" idea of a nice looking healthy bird. I will cross them with mine and see what they produce. If one of my hens gets broody again.
And it is the lighter blue one. Its so cute & doing really well. They are eating like little pigs which is good. Hopefully we will be able to start on the brooder/bachelor pad today. My poor hubby worked six days last week so we did not do anything yesterday.
Now that I am aware of chicken mills I will be more careful in purchasing any birds. I also think I know of the person in your area who sells birds constantly and seems to add the rare and popular breeds to sell. I don't know of anyone who makes their living off of livestock alone. Most of the people I know also work other jobs and sell/show/breed high quality cattle or horses not chickens.