This option is quickly bored with the eyes.

If the room is small enough, then you should choose from blue shades. They visually expand, increase the space, while red and yellow will approach for large, spacious rooms to make it more comfortable. And to get rid of compression, if you have very low ceilings in the apartment, it is worth gluing the walls with wallpaper with a vertical pattern, but you should not choose it with small. This option is quickly bored with the eyes.