It has been discovered and established that very deep red and blue colours speed up and slow down respectively, the metabolism and overall growth of plants. These colours similarly affect human beings. For instance, red light has been found to speed up the circulation and raise blood pressure, while blue light is calming. The effect is found same even if the patient is blind or blindfolded.

The theory of radionic is that every part of the human body radiates a specific level of energy. If all these energies are at specific levels, the individual etheric body is in balance. The etheric body is the spiritual essence of the physical body, but it exists in the abstract form and is thus non-tangible. It carries the spark of life and can be reviewed externally as the colour of the Aura. If an individual's energy levels are either too high or too low, the etheric body is out of balance or in disharmony. Disharmony in etheric body can result in disease in the physical body. According to the radionic theory nothing occurs in the physical body unless it first happens in the etheric body..

Administrated to an individual's multicoloured Aura which is said to be an electromagnetic field, extending out about three feet around the entire body, colour therapy restructures a harmony for the person. People with psychic healing abilities can be trained to see the multicoloured Aura. A few say they can even diagnose diseases by interpreting the intensity of each colour and the distance each colour extends out from the body.

In fact, colour can affect people's mood, perception of tem­perature and time and their ability to concentrate. It is now bemg used increasingly to produce desired responses in mental health clinics, hospital recovery rooms, prison cells and in work places.