I always tell my clients to take a walk/drive around the neighborhood and photograph homes they love. Mid-Century homes can wear all sorts of colors depending on what the landscaping will be. Classics that make a home feel more updated are black trim with a lighter gray paint or crisp white on a darker background. I love the idea of doing a super dark gray on the two-story part and a lighter gray on the single story to give it depth and give it a modern feel. Congratulations on your amazing purchase!