i've heard this before but the way it was explaned it said that "blue pyle" was incorrect terminology leading the unexperienced person to think that a blue pyle is a red pyle where the red is blue if anyone would like to cheak out the book it is "bantam chickens" by Fred P. Jeffery. the book has a very informative section on breeding/chicken genetics mostly color though not all colors are in it as it was made in the 70's the ABA still sells it i believe but what i've read and have been told it's still up to date.