White is often seen in the aura, prior to any actual colors. It is often seen as a diaphanous shades. White has all colors within it, and when it does appear strongly within the aura, it is often in conjunction with other colors. This is how you can know whether it is an actual energy color or just a poor perception of the aura. When the white does stand out as a color in the aura, it reflects truth and purity. It indicates that the energy of the individual is cleansing and purifying itself. It often reflects an awakening of greater creativity as well.
Gray is a color of initiation. It can indicate a movement toward unveiling innate abilities. Those shades of gray that lean more toward the silver reflect an awakening of the feminine energies. Those are the energies and abilities of illumination, intuition and creative imagination.
The darker shades of gray can indicate physical imbalances, especially if seen next to specific areas of the physical body. They can also indicate a need to leave no task undone. Much gray in the aura can indicate a person who is secretive and who is the lone wolf type.
Brown often appears in the auric field. Although many people think of as reflecting a lack of energy or an imbalance, this is not always so. Brown is the color of the earth. When it shown itself in the aura, especially in areas above the head and around the feel, it can reflect new growth. It indicates establishing new roots and a desire to accomplish. It is a color that can reflect industry and organization.
On the other hand, brown across the face or touching the head may indicate a lack of and need for discrimination. It seen in the areas of the chakras, it can indicate that those centers need to be cleaned. It will reflect in such cases a clogging of their energies. Brown is often difficult to interpret, as it can easily reflect problem areas in the physical, but you must be careful about jumping to conclusions when you see it. Feedback from the other person is the best means of understanding it.
Black is one of the most confusing of colors in the auric spectrum. I have heard individuals say that, when black shows up in the aura, it is an indication of death or terrible disease. I have not found that to be true.
Black is a color of protection. It is a color which can shield an individual from outside energies. When seen in the aura, it can reflect that the person is protecting himself or herself. It can also indicate that person has secrets. There is nothing wrong with that, as long as it is not taken to extremes. Black can also indicate that a new understanding of burdens and sacrifices is going to manifest.
Black can also indicate imbalances. Physical imbalances often show up as black or darkened areas in the aura around the physical body. the location provides clues to this. In the outer edges of the aura, black can indicate holes in the auric field. I have seen this in the auras of those who were victims of child abuse and those who are or were strong substance abusers ( alcohol, drugs, tobacco etc.).
Another aspect that I have observed should be mentioned. I have often seen within the aura what look to be soft, twinkling lights. They are usually very sparkly and silver in color. I have found that they indicate one of several things. These "twinklies'" as I call them, are almost always a sign of great creativity and fertility. When they appear within the auric field of a person, it indicates that greater creativity is being activated within the individual's life.