Sophisticated color pallete for a teenage girl?

I'm moving into a new house soon, so i have the opportunity to paint my room. I'm looking for a color pallete that's more sophisticated and adult-looking. I might do two different colors or paint in an accent wall. I want it to look like a teenage girls room, just more mature. Any ideas on wall colors, accents, furniture colors (im also getting new furniture) or how i should do my room? Thank you.