Working on "The Dark Side" Swap

This is one that comes naturally to me, yet I want to do something unique, as it should be when you are making Artist Trading Cards. So, I'm thinking about what is "the dark side"? It can be a positive, as in the wealth of the imagination hidden behind the conscious mind, the dreamlife behind sleep. It can be, and has usually been considered, a negative: "darkness" linked to fear, the unseen, the underbelly of human behavior. We don't apply consistent meanings to our word symbols.