Jen of Jen Loves Kev, posted the most unbeleiveable update of her bedroom. She actually drew the tree pattern, projected it and traced over with paint. I'm not sure if I'll have time to go this far, but I've seen some lovely wall decals that might achieve the same effect. What I love about this room is that a lot of the furniture and deco items are similar to mine (yay Ikea). She has a rather nice, neutral textured room with little pops of color.
I have two different duvets that I primarily use - both are white - one has little green flower embroidery. I like to keep my duvet simple so I can change up the bedding look with different cushion covers & sheets. For paint, as with the master bath, I will use Gray Expose. If I end up painting the tree detail, I'll use Downsprout.