Working with the magic of color
Colors can do wonders and if it is especially in your living room, colors do really play a decisive role in setting the tempo of you mind. Selection of complementary colors conveys that your room is more energetic and bold. These colors normally are combinations of red-green, yellow-purple etc.
Triadic color implementation is another combination for your bedroom, as it would come in combinations of three colors which are equal in intensity and depth.
If you want your room to convey a lot softened look, you can select three colors from the same family to decorate your wall.
Calm effect for the room can be made with combinations of variations of different colors. For example, if you chose blue and light blue and mix it up sensibly to decorate your walls, it would be as appeasing as it could be. Many people tend to prefer this combination instead of a plain colored wall.