Persians may have been white at one point in time (several thousand years ago), but time and all the race mixing since then from the
Mongol and
Arab invasions have pretty much wiped that out of existence.
Today, in some
rare minority cases, you will see the genetic legacy of the ancient white Persians with phenotypical expressions such as blue eyes or blond hair and lighter skin.
There is nothing "Aryan" about today's Persians, except for their language classification.