Glad I was not the only one.
Yep, brown leakage.... refers to the color brown or rusty gold showing up in their featering on their shoulders and tops of the wings. It is the result of an outcross done many generations ago by some breeders to improve something with the breed.
It shows more readily in the roosters plumage and is not a desirable trait to pass on so most roosters with it go to backyard flock use only or the pot, but not a breeding pen.