Mystery chick color?

[Chik_8]

I put 5 eggs under my first broody hen from the following breeds of hen: 1 barred rock egg, 2 leghorn mix barred rock eggs, and 2 olive egger eggs (welsummer cream legbar mix). The roosters possibly the dad of all eggs are barred rock, buff Orpington. For only the barred rock mix leghorn eggs the dads can also be black Australorp, Rhode Island Red and Americana. One chick came out blue which is a color I don’t have. I thought the blue gene was rare and none of my breeds are known for it. Hopefully I will have a better idea if it has a crest or beard(pretty sure the beard would show already) any ideas which mix can pass this gene?

I will insert a pic of it

 

[MrFluffyandGirls]

Americanas come in blue so maybe that roo.

 

[The Truth Is Out There]

What did this chick end up looking like when it grew up?!