Tractor Supply Company had this for sale as a Dominique. It was the only blue chick they had. I knew it wasn't a Dominique but bought it mainly out of curiosity. I asked the clerk (who from past conversations I know keeps some chickens and has some knowledge) and she said the only blue birds she had seen offered were Wyandottes (no rose comb on him), Silkies (large fowl, regular feathers for him) and Langshan (no leg feathering on him). He is a bit larger than his Dominique friends and is even bolder and more curious than they are, which is saying something.
The clerk did check and said the only Orpingtons listed were buff, the only Jersey Giants listed were black.