According to the effects of colors on the human body and emotions, certain colors are selected to exert direct effects on the mind and emotions via eyes. This is the so-called pleasing the eyes and refreshing the mind. Besides, the color tones, color temperatures, etc. may also be used to regulate emotions.

The method, under the guidance of the theory of "the five colors corresponding to the five zang organs and five emotions", is used to arrange the colors of the patient's living surroundings such as living rooms, utensils, furnishings, clothes, quilts, window curtains and lights as well as the dresses of doctors and nurses of rehabilitation according to the requirements. Also, rooms of rehabilitation with colors and "color instruments" are installed in hospitals and sanitariums to rehabilitate the corresponding diseases. Colors and their indications are as follows.

1. Warm colors
Red and orange, with warm feeling, possess the actions of making people excited and joyful. The colors are applicable to depression, depressive psychosis, lethargy, dementia, etc.

2. Cold colors
Among indigo blue, blue, purple and green, one may select one color, or two, or three. The colors have the actions of cooling, tranquilizing and making people restrained. Cold colors are applicable to dysphoria, irascibility, insomnia, terror and fear as well as mania, epilepsy, etc. More information, please read Five-Organs Transforming Five Kinds of Liquids.

3. Joyful colors
Red and pink make people happy and have the action of restraining grief. The colors are applicable to people with low spirits, susceptibility to grief and cry, and depression.

4. Sad colors
Black is mainly applied or white may also be used to restrict anger. Both colors are applicable to susceptibility to anger, overjoy, etc. More information, please read The Six Fu-Organs--Gallbladder.

5. Fearful color
Black has the action of restricting overjoy. The color is applicable to mania, endless laughing, etc.

6. Anxious colors
Yellow, light blue and light green possess the actions of restricting fear and benefiting thinking. The colors are applicable to terror, fear, distraction, etc. The flexible selection of either single color or multiple colors, either light colors or rich colors, is used to form the proper compatibility according to the requirement of the patient's in applying the colors. More information, please read The Six Fu-Organs--Stomach.