Please Help! 6 Barred Rock boys?

I purchased 6 Barred Rock "pullets" from tractor supply. They are 6 weeks now and all of them are starting to get small waddles. Most of their combs are still yellow for the most part. there is one that is a bit redder than the rest, but not by much. Did I get stuck with 6 roos?

(Photo of yellow/copper chick is for reference, he is 6 weeks also and his comb/waddles are much larger than the Barred, but i dont know his breed)

Thank you so much for your time!