I used Wild Horse by Behr but it's pretty dark. On Behrs web site you can put together a room and try their different paint samples; that's how I decided.
You can go to the home depot and bring the bedding and they can match the paint for you. Just make sure to get a really good primer so it looks good. Also, don't underestimate lighting the room. That tends to make paint colors look too dark / too light.
Re: Chocolate brown and pink nursery