Rawans wife used to call him he arya...why so..lord Ram was called arya putra though he was of dark[shyam] varn,same with lord krishna .so how far its true that aryans came from outside and attacked non aryans.Actually Arya or aryan at that time was a word used to honour a noble,worthy person .they may be from any clan or community .
Some historians termed aryans as upper class people eg.brahmins ,kshtryas.but before vedas and more...