What could be a theme for my girls room. one is 8 and 14 the wall color are pastel pink and pastel purple trim

Well my advice is to repaint im 16 and my room has a 2ft stripe of lime green at the top then like a 4ft stripe of dark purple in the middle and then a 2ft stripe of bright blue around the bottom then my bed is like a purple and white swirl bedspread with green pillows and green blue and purple stiped sheets. I really like it and i have had it this way sence 6th grade also girls of all ages have liked it as well. If both ur girls like these colors they might really enjoy a room like it.