I'm a sensitive little snowflake with the one-way color swapping in general, but Chani doesn't bother me at all. I don't have any attachment to the books or the original, I don't know anything about the actress (and am intentionally avoiding it, you fucks) and it definitely seems like the Fremen were meant to be Brown Sandies. Only other instance I can think of where this shit doesn't bug me (assuming I'm aware it happened) was the talk about Idris Elba being the new Bond, since I think that just requires someone with big-dick swagger and style.