As many witches will tell you, auras come in many colors and many variations of those colors. Each has its own meaning for those who know how to read auras. Some people have auras that combine two or more colors or their variations, as well.
Here is a very basic list of only the most common aura colors:
To cleanse the astral body, clarify the aura and provide magickal strength during times of stress you may use an Indigo Blue Water Spell.
As you are running a tub of slightly cool water, stir in one ounce of the Indigo Blue Water. Soak for at least 20 minutes and submerge several times to get the full effect.
As you are soaking visualize the blue water seeping in through your pores, see it seeping into your cells and going deeper and deeper with each breath you take, strengthening you all the way to your core. Feel the tranquility it provides as it re-balances your spirit and washes the stress away from your body, mind, and spirit leaving only peace behind.
Visualize the cleansing blue water washing over your aura each time you submerge. See it flowing over your aura, washing out to the very edges and cleansing away the negativity that attaches itself to your aura during daily life. Watch as your aura becomes clean again and clarifies in color until it shines brightly.
As you submerge, also feel the water washing away the detritus collected from other astral bodies, which have encountered yours on the astral plane. These astral bodies leave behind their vibrational residues of anger, hatred, greed, envy, and other unwelcome emotions. These residues wash away as you visualize it; you feel it as your astral body begins to vibrate in harmony once again.
When your visualizations are complete, leave the tub, and feel the blue water draining from your body and back into the tub. Allow it to drain away all the impurities and know as you step out that you are revitalized, re-harmonized, and cleansed through.