When we meet Nancy in Nightmare 3, she has a wisp of gray hair on the right side of her head. A blatent inconsistency from nightmare one, where Nancy wakes up in the dream clinic with Freddy's hat. That nightmare turned her hair gray on the LEFT side. Inconsistencies between sequels aren't supposed to count, but that one is a big detail that was overlooked. Are we to believe Nancy liked her nightmare-streaked hair, but that she would have preferred her fright to manifest itself on the other side of her head, so she colored the original streak back to brown and gave herself a new one? Or maybe after watching Nightmare 2 she was so horrified by the awfulness of it that she had a nightmare that turned her right side gray? I think not.