My parents are buying LO2 bedding for her birthday in a couple of weeks. Basically I can pick whatever and they will buy it. The budget is $50. I picked out this sheet set, but I'm not sure which comforter color to go with. Her walls are the same light green as the lighter trees. She has aqua colored curtains. I'm not picky on things being matchy matchy though. What color would you pick for a comforter?