Red or pink any light colors make your room appear happy and big. Maybe you should watch that R.E.M video "happy people" the video has a lot of cool colors in it.

3 of my walls are already yellow and the other one right next to my bed is white, with a dark tealish chalkboard paint square. I would like something that makes you happy not blacks and none of those sort of colors. What do you think i should paint my white wall?