I meant there cannot be a Blue Barred Plymouth Rock in this particular present time because I don't think anyone has made those exist yet. Sorry for the confusion.
My logic is right because I didn't say there couldn't ever be, genetically, a Blue Barred Plymouth Rock. I simply stated that no one has made that yet.
There are blue versions of the Plymouth Rock, but no blue versions of the Barred Plymouth Rock. The breed is called a Plymouth Rock, or shortened to Rock, and Barred Plymouth Rock is one of the color varieties of Plymouth Rock. Therefore, there cannot be a Blue Barred Plymouth Rock, as that...