You're welcome. :)
I have 6 PBEs and bred them to a Production Red rooster beginning of this year. The pullets are just starting to come into lay, and I'm getting the most gorgeous light olive eggs, same color as a Starlight Green egger. It's been a journey figuring out just what I have and...
It's possible your gray one is a PBE mix or a second generation PBE since he has a single comb. It's kinda hard to tell from that picture, but it doesn't look like he has muffs or a beard, so he's most likely not an EE. PBEs come in that shade of mottled gray, often with copper leakage around...
First off, I don't think you have a PBE. You have an EE because the bird has a beard and muffs. This may be your Americana / EE mix. It's a beautiful bird, but that color is not one seen in prairie bluebells. PBE's do not have beards or muffs.
If you want to post a pic of the "sapphire...