Sometimes using color sparingly in your bedroom creates a sleek and serene environment. You may argue that monotone rooms can get boring, but I think your bedroom is the one room where you should keep colors to a minimum. Using neutral shades (browns, grey/blacks, whites) is a great idea for a bedroom if you want to portray calm, relaxation and rest.
Just think of the past hotels you have visited and loved – I bet most of them had white-on-white bedding (don’t you love sleeping in a white fluffy cloud?) and neutral furniture/colors. Here are some bedrooms that got their “usage of color” just right: