In some breeds what they're calling red pyle is the splash version of blue breasted red or blue partridge etc.
So regardless of the pattern its on the blue breeds like any other blue, black, splash.
I believe that's probably what the other poster is talking about when he says inbreeding blues together they turn into pyles.
It has nothing to do with inbreeding or turning into pyle from being true blue or what ever.
Its just breeding blues together that happen to be on a BBR type pattern.
That make better sense?