Same strain or new?

[Our Roost]

I am recently purchasing some Plymouth Rock chicks this spring. The supplier was out of white hens and said only black rocks were available. Are barred rocks commonly called black rocks or are these chicks actually a new all black strain? I havent contacted the supplier as yet.

 

[fried green eggs]

I'm not sure but, I think Rocks can be white, black, brown or barred. Same breed just different colors.