We've been able to use our guest bedroom quite a bit in the last year. I think we've had 10 guests stay there so far (not all at the same time of course :).
It was originally tan, then I decided to paint it red to make it feel cozy... turns out it was a little too cozy and dark.
I realized that no matter what I did to try to accessorize the red room, nothing felt quite right. So, I decided to paint it white (even though Dave refused to help... since we had just painted the room red a few months earlier). I LOVE the way it turned out. The difference is more dramatic than the photos reflect. The fresh white walls are a better fit for our cottage-style home. Yay.