Several ancient cultures, including the Egyptians and Chinese, practiced chromotherapy, or using colors to heal. Chromotherapy is sometimes referred to as light therapy or colourology and is still used today as a holistic or alternative treatment.
In this treatment:
•Red was used to stimulate the body and mind and to increase circulation.
•Yellow was thought to stimulate the nerves and purify the body.
•Orange was used to heal the lungs and to increase energy levels.
•Blue was believed to soothe illnesses and treat pain.
•Indigo shades were thought to alleviate skin problems.
Most psychologists view color therapy with skepticism and point out that the supposed effects of color have been exaggerated. Colors also have different meanings in different cultures. Research has demonstrated in many cases that the mood-altering effects of color may only be temporary. A blue room may initially cause feelings of calm, but the effect dissipates after a short period of time.
Studies have also shown that certain colors can have an impact on performance. Exposing students to the color red prior to an exam has been shown to have a negative impact on test performance. More recently, researchers discovered that the color red causes people to react with greater speed and force, something that might prove useful during athletic activities.