So hello again, I'm the maker of Back and White. My wifi crashed while you were streaming my game (perfect timing lol) so I looked back at the video and you asked what's the link with the theme, so here I go. In the lore when you're black you are in the "untruth", then you become white and you are "stuck" in what I called the "Truth". That's why at the begin, the game tells you "when you know something you can't forget it" because once you're in the Truth you can't go back in the Untruth. So at first, the game lies to you by showing you only a part of the level, a sort of false level. (normaly it should have been explained with the text below but you know, choices had to be made). Voilà !