An aura is an energy field that surrounds living objects and objects that hold some kind of Power. Each color in an aura represents different traits and aspects of that person or thing - and how you see an aura depends on the individual*. They can be used to determine someone's general state, someone's mood, and their current state of health. Every time you come in close proximity or contact with another person, your aura reacts with theirs. If your aura and theirs are in a like state, or tuned to the same frequency, you may find yourself liking them instantly. If their aura is not at all like yours, you may find yourself taking an instant dislike to them.
We've all been trained not to "see" things in our lives....that's why learning to see auras, unless you've the knack for it instictively, takes a bit of time. Beginners can usually see white, yellow, and light, bright colors first, with the darker colors taking a bit more time to see. To practice, find a place with soft or dim light, and a nice large piece of white paper. Place your hand on the paper and relax your eyes; don't stare at your hand, but rather the spaces around it. You should, after a time, begin to see a soft haze around your hand. Look at it long enough, and you'll start to see colors.
Don't get discouraged if you're not successful at first. This is a psychic skill, and as with all of them it takes time and use to get better. Look at other people to keep up on it once you get the trick, and also plants, rocks and other "magical" things. Also bear in mind that you are also looking through your own aura. So it will take some time to learn to distinguish between the colours in your aura, and the colours of another's.
* (As I See Them - This is how I interpret the colors of an aura - not everyone will read the same feelings with the same colors. Follow your heart and your intuition. If someone doesn't feel frustrated, but instead very powerful and joyous and you're seeing purple, that's what you see as purple. A friend of mine sees frustration as orange - she hates orange things, I guess. Learn to follow your feelings - it'll make aura reading easy.)
Colors of Auras
Colour Clear/Bright Muddy/Dark Red The color of strength, strong passion, and willpower. Also a colour of energy, fire, drive, determination and fire. Can reflect anger, love, hate and unexpected changes. This colour reflects love as well, although more to the physical nature of love. Dark red may symbolize one who has a quick temper and is nervous or impulsive. It may also reflect serious aggression, uncontrolled lust, or violence. Dark reds can indicate illnesses in the reproductive system, or ailments relating to sexual function. Orange Color of warmth, thoughtfulness, and creativity. This colour may also reflect on courage and joy. An opening new awareness. Golden orange denotes self-control, and self-knowledge. Orange is also the colour of physical pleasure. The muddier shades of orange may indicate pride or vanity, as well as worry or anxiety. A person with orange in their aura may suffer from kidney ailments, or lower GI issues. Yellow This colour shows mental activity, and optimism; it can also mean new learning opportunities. A golden yellow means that the person takes care of him/herself. Yellow can also reflect wisdom, intellect, enthusiasm, and early spiritual development. Muddy yellow may represent the owner is shy or withdrawn. It can also reflect too much thinking, being over-critical, or feeling deprived. Sicknessess associated with dark yellow are usually chest or stomach ailments. Green Green is the color of sympathy and calm. It can also reflect empathy, sensitivity, and emotional growth relating to relationships with others. People who are predominantly green are reliable, dependable, open-minded, and may having a healing ability Dark shades of green can indicate one who is jealous or uncertain. It can also indicate someone who has closed off their heart to others, to avoid being hurt. Aliments associated with green in the aura are generally related to the heart and blood. Blue The color of quiet and calm. Blue also represents spiritual devotion, seeking truth. Blue is the colour of communication. A lighter shade means active imagination. Finding royal blue means the person is given to honesty, and has good judgment. Any blue in the aura is good to have, but deep, clear blue is the best. One with deep blue in his or her aura shows a person who has found their purpose in life. Deeper shades of blue can reflect loneliness, blocked perceptions, or someone given to rushing into things. Blue may sometimes represent a tendency to be moody and depressed, if it appears to be smoky, or greyish. Ailments associated with blue are usually throat, or mouth/teeth related. Purple or Indigo The colors of one who is seeking something in life that is greater than themselves. Purple reflects the blending of heart and mind with physical and spiritual. It can also mean independence, and a high level of active intuition. Purple also shows an ablity to handle affairs with worldliness and practicality. Cosmic connections. A need to overcome something blocking development, or feeling misunderstood. Also intense erotic imagination without release, or over-bearing personality. Illnesses connected with purple are often brain problems, or neurological disorders, as well as mental illness. Pink Pale pinks show compassion, emotional love, purity, joy, comfort, and love of art and beauty. Darker muddy shades of this colour reflect immaturity, a lack of compassion, or a lack of truthfulness. Also related to heart illnessesm or emotional problems. White Many times this is one of the first colors you will see when learning to read aura, because all the colors of the energy field are blurring together. It takes focus to be able to let them blend out. However, when it is a true and strong color of the aura, it reflects purity and truth. It may also be someone who is cleansing and purifying themselves. Dull or off-white may reflect a newly acquired taint, or the need to continue cleansing. Grey Grey reflects a movement toward un/veiling ability. Also neutrality, balance. Dark grey shows physical imbalances, a secretive nature, and deception. Brown This could reflect a person who is very "earthy" - found above the head reflects new growth, while around the feet reflects grounding, setting down roots. It can also reflect openness, and an understanding of the world as being internconnected ("All My Relations"). Dark or sickly browns, if seen in areas of chakras or energy centers, means those centers need to be cleansed. Can also mean a deliberate blockage. If found in a particular area with another dark or muddy colour can indicate the start of severe illness. Black Black carries with it both positive and negative meanings, despite it having only one tone. (There is no clear/muddy split here.) On the positive side, black is the color of protection. It can also mean deliberate withdrawal or internalization. On the negative side of black, it can show in a person who's hiding something to decieve another. It may possibly indicate imbalances as well. If seen in the outer edges it means holes in the field. The presence of black spots in the aura may indicate that it is imbalanced in some areas. That may mean that person has some negative habits that he or she should work on. Meditation sometimes helps to reduce these spots, as does things like exercise and sunlight. Silver Lights, or Twinkles Seeing these in a person's aura may mean that they are pregnant, or are soon to be. However, it may also represent a person who is allowing great creativity in their lives. See first column. Flames or Other Energy Forms This doesn't actually indicate any color, but rather a energy form. If the aura looks as if the person is surrounded in a corona of flames, of any color or colors, then it may indicate great personal power or that the person is an avatar of some kind. As well, some people's auras may not be humanoid. They may be specifically shaped into things for different purposes, or many naturally be that of another creature, as is common with Otherkin. See first column.