Like the name suggests, these colors exude a sense of warmth or chill. The warm colors include red, yellow and orange. These colors bring in a lot of energy to the surroundings. Also these colors seem to advance towards you. This makes spaces appear smaller making it an ideal choice for places wanting to create an intimate atmosphere.
Cool colors on the other hand seem to recede away from you. They include the blues and violets. These group of colors are ideal if you want a small roof to look or feel larger. They will also induce a restful sleep in the householder. Just be careful not to mix any warm colors with the greens or blues as this will make the mix warmer.