I love soft greys, taupes and whites. Pretty much how I want the whole house, have you noticed? I just think they are such classy colours; not harsh on the eye and they still open up a room if you use placement correctly. You could even add a touch of black, as shown below which I really love and hadn't ever thought of before.
I couldn't quite find the images to portray how I exactly want it, but it is just some inspiration. None the less the below are some seriously beautiful bedrooms.
Let me know in the comments what you think. I'd love to know your ideas too!