The main part of the color and energy  in the aura is provided and activated by the action of the chakras. According to the colors of the person's aura, it is possible to know if his/hers awareness is located more in the physical, mental, spiritual or intellectual layers, and if there is some kind of imbalance between these areas and the action of the chakras.

The aura fluctuates, as a response to changes within you and in the environmental. The two main fluctuations are in the color and the shape.

Most of the aura color changes result from changes within; the sum of all colors may fade or intensify according to the person's mood and emotional, mental, and physical states. The spiritual sate also has an enormous effect on the colors and size of the aura.

The changes in shape are usually inflicted from outside.

The size of the aura may also change in both cases.

The colors of your aura breathe, expand and contract, so all the colors start to dance.

In a healthy person the colors are pure, bright, and quite dense or strong.

Happiness creates sparkling movement , and a slightly shiny effect.

Feeling of love overlay the aura with the colors of pink and violets.

Sadness represent a law energy state, and the colors become slightly dimmer, even dull.

Dreamy people also have faint auras; they are less grounded physically, so the colors are less solid.

The two most common discolourations of the aura are brown and grey. They are results of "energy in" not equal to "energy out".

A grey discolouration suggests the creation of a barrier to an energy input of some description. This should be at mental level (unwillingness to take somebody's ideas), at emotional level (fear of an emotional involvement), or at metabolic or physical level (lack of desire for food).

Brown indicates "holding on" to energy that needs to be let go. Someone who freely takes, but rarely gives is likely to have this brown discolouration of congested energies.

Even the food you eat has an impact on the quality of colors in your aura. Highly processed foods, especially those that are packaged, sealed and stored, lack energy and produce a correspondingly thin aura. If you eat too much meat, your aura becomes denser.

The change in your consciousness is also reflected in your aura.

The normal, beta pulse rate (during normal human activity is 21 cycles per second) produces the typical multi-coloured aura.

As your rate slows to alpha (13 cycles per second), the aura shows a blue overlay.

At seta ( 8 cycles per second), the blue gives way to gold, and if the delta state is reached ( 5 cycles per second), the aura is almost white, lightly tinged with magenta.

In effect, you are moving through all the levels of consciousness of the evolutionary process.

Shock is the most likely cause of shape changes to the aura. It may cause your aura to shift away from your head or heart, leaving both unprotected. The effect of this is to separate your spirit from your physical sensations. If the shock is severe enough to shift your aura away from your hart region, your emotions will no longer feel connected with your body. You may feel as you are about to faint, or on the verge of a nervous breakdown. A less severe shock ( such as witnessing an accident) may regularize after about 24 hours. During that time you may feel vulnerable, insecure, and unable to accept any form of responsibility. You lack connection between your personality and your mental activities.

A mild shock (cutting yourself or falling down) may shift your aura briefly away from your head. To bring your protective aura back into place, taking a deep breath is usually enough.

Negative emotions can also alter the shape of your aura. Hate and jealousy produce a jagged edge to the auric layers, which weakens the structure, which means that your protection is undermined.