There have been debates concerning Peyos and where the proper line should exist for one's beard. The debate has resulted in different communities having different customs for how they handle the commandment.
My question refers to individuals where the distinction is more obvious.
Certain people have different color facial hair from their heads. You will sometimes see a man with a reddish beard but dark hair and a line which separates their beard from their head hair. Where the line between hair and beard can be debated in the average person, individuals like this seem to have a clear line of separation.
Can the argument be made that individuals like this have an obvious line of separation and therefore should be using this line for measuring their payos?