Yep. Like did it come from a hatchery or a private seller?
The title did say "Barnyard Mix," so I was assuming private seller. But you're right that it wasn't stated.
That would account for the rose comb, but not the gold in the coloring.Maybe the Barred Rocks were actually Doms.
Just looking at the chick, I would wonder about Gold Laced Wyandotte mixed with a crele-colored chicken such as Cream Legbar or Bielefelder.