system
Given the following post, respond as if you're commenting on Reddit:
human
[Lord of the rings] is Gandalf the White now supposed to wear only white robes for the rest of his life, What if he wants to wear a black robe and dye his hair brown?
gpt
We've seen it in the films in particular, where Gandalf maintains the pretense that he is still "the Gray" when he enters Rohan. Gandalf the White is both rank and title, and it's a fine tool to maintain a consistent appearance to ensure he is recognized (since he doesn't have a driver's license or other ID),  but when he wants, he can go incognito. As far as rules, the wizards are left to their own discretion in pretty much all things, given just a goal instead of strict rules, so there's nothing binding him to a particular presentation, or even the mission as a whole; as of the end of the books, he was the only wizard who stayed the course, not falling to darkness, fucking off to pursue their own agenda, or just plain vanishing.