Interesting article on Room Color and How it Affects your Mood.

Crimson can make some people feel irritable. With red invoking feels of rage and hostility is a color that should be avoided as the main color of a room. Sitting for long periods of time in a room this color will likely breakdown any peace and harmony you are striving to create in your home. Ancient cultures used the color red to stimulate the body and mind and to increase circulation.