The colors always surrounded a man and affected him. Hundreds of philosophers and scientists tried to read a riddle of deep influence of colors on the human.
The colors operates both - body and soul of human: it causes physiological reactions, influencing on a capacity and on the vital functions of separate organs. Colors have the emotional colouring, which causes a certain mood, influences on our feel, appetite and sleep.

Red.
This color has the longest wavelength, that is why its influence is the strongest among colors.  It is a stimulating, warming and energetic color, that activates all the functions of the body. It stimulates nervous centers, saturated with energy muscles and lever. It is used to treat chicken pox and some other skin diseases. It increases muscles tension for a short period of time, raises the blood pressure and accelerates the respiratory rhythm. You can be nourished with energy of red color during meditation, it will do you good when you have cold, asthma or pneumonia. It can do harm to stout people. Red is bad for nervous, hypersensitive and red-haired people. It is not recommended for those with inflammatory processes, as it activates them even more.

Orange.
 It is a tonic color. It acts in the same way as red does, but to a lesser extent. It enhances digestion, facilitates rejuvenation and liberation, strengthens the will and uplifts your spirits. This color enables pulmonary tissue. Being a spasmolytic, it enhances blood circulation and improves complexion, but too much orange can cause the body overheat (it is much warmer than red).

Yellow.
It is a tonic color, physiologically optimal. It is the least tiring color, that stimulates eyesight and nervous activity, activates motor centers, arouses good mood and generates the muscles energy. It is used to treat diabetes and maldigestion, squint and clubhand. In clinical practice meditation of yellow stimulates intellectual abilities, compensates for mineral shortage and reduces the body’s acidity.


Green.
This color is physiologically optimal. It reduces the blood pressure, widens capillaries, calms and eases blind headache, increases the muscles efficiency. It acts in opposition to red.
Goethe wrote: "They say those who do not like green, are afraid of life difficulties and tricks of fortune, as well as any changes in their life. But those, who prefer it to other colors, are confident and afraid of being under someone’s else influence. People who like green color are distinguished by strong will, perseverance, insistence, that allow them overcome life’s difficulties. If green hues are to your liking, you are sensitive and quiet, you are energetic, you are able to cooperate and help others, possibly, you hide a healer".
Green color refreshes and calms the body; it is an antiseptic and is recommended for treating nervous system, vascular system, asthma and hyposomnia.

 
Light Blue.
This is a color, restful to the eyes, that reduces muscle tension, lowers blood pressure, slows down the respiratory rhythm and pulse rates, refreshes, calms down, lowers appetite and mitigates pain. It is an antiseptic and febricide. It helps with hyposomnia and nervous disorders.


Blue.
Its sedative action passes into depressive, this color facilitates suppression of functions of human physiological systems. It is an antiseptic and febricide, that facilitates growth, helps to treat edema, burns, hair loss, rheumatism, headache and eye inflammation. It is recommended in therapy for emotional and nervous people. Long-term exposure of blue can lead to depression.


Purple.
It combines effects of red and blue. It has a depressing effect on the nervous system.

Explanation to the figure: + tonic effect - calming effect R – red, O – orange, Y – yellow, G – green, LB – light blue, B – blue, P – purple. Green color, as it is shown in the picture, is the most neutral. Purple must have been left aside, as it has a depressive, not calming effect as light blue or blue colors.

Information source - "Цветоведение" Миронова.