Here's what I think:\nEpisode 7: Rey: Light Kylo: Dark\nEpisode 8: Rey: Dark Kylo: Light\nEpisode 9 (At the very end): Rey: Gray Kylo: Gray\nThis would be a great theme to wrap up Star Wars. Sometimes, everything isn't all black and white. There's faults in the Jedi's philosophy and there's faults in the Sith's philosophy.