This is how I interpret aura colors but what I see may be different from what you interpret.

RED AURA COLOR: Relates to the physical body, pertaining to the heart or circulation. The densest color indicates friction or unhappiness. It can indicate anxiety and/or nervousness. Possible defunct 1^st chakra. Needs cleansing.
Deep Red: Grounded, realistic, active, strong will-power, survival-oriented.
Clear red: Powerful, energetic, competitive, sexual, passionate
Bright and light pink: Loving, tender, sensitive, sensual, artistic, compassion; new or revived romantic relationship. It can also indicate clairaudience.
Dark and murky pink: Being obsessed over issues and/or dishonest with themselves.
Orange Red: Confidence and creative power. In a good, bright and pure state, red energy can serve as a healthy ego.
ORANGE AURA COLOR: Relates to reproductive organs and emotions. The color of vitality, vigor, good health and excitement. Lots of energy and stamina, creative, productive and adventurous. 
Orange-Yellow: Creative, intelligent, detail-oriented, perfectionist, scientific.
YELLOW AURA COLOR: Relates to the spleen and life energy. It is the color of awakening, inspiration, intelligence and action shared, creative, playful and optimistic.
Light or pale yellow: Emerging psychic and spiritual awareness; optimism and hopefulness; positive excitement about new ideas.
Bright lemon-yellow: Struggling to maintain power and control in one’s life; fear of losing control, respect, and/or power. The overall sense of being drained.
Clear gold metallic, shiny and bright: Spiritual energy and power activated and awakened; an inspired person.
Dark brownish yellow or gold: Overly analytical to the point of feeling fatigued or stressed; trying to make up for “lost time” by learning everything all at once. Stretching yourself too thin, leaving yourself vulnerable to attack.
GREEN AURA COLOR: Relates to the heart and lungs. It is a very comfortable, healthy color of nature. When seen in the aura this usually represents growth and balance, and most of all, something that leads to change. Love of people, animals, nature and possibly a teacher.
Bright emerald green: A healer, also a love-centered person
Yellow-Green: Creative with the heart, communicative and grounded.
Dark or muddy forest green: Jealousy, resentment, feeling like a victim of the world; blaming yourself or others; insecurity and low self-esteem; lack of understanding personal responsibility; sensitive to perceived criticism
Turquoise: Relates to the immune system. Sensitive, compassionate, healer, therapist.
BLUE AURA COLOR: Relates to the throat, thyroid. Cool, calm, and collected. Caring, loving, sensitive and intuitive.
Soft blue: Peacefulness, clarity and good with communication skills.
Bright royal blue: Clairvoyant; highly spiritual nature; generous and presently on the right path.
Dark or muddy blue: Fear of the future; fear of self-expression; fear of facing or speaking the truth. Need to cleanse this chakra.
INDIGO AURA COLOR: Relates to the third eye, visual and pituitary gland. Intuitive, sensitive and deep feeling.
VIOLET AURA COLOR: Has warrior-like tendencies. It relates to the crown, pineal gland, and nervous system. The most sensitive and wisest of colors. This is the intuitive color in the aura and reveals the psychic power of attunement with the higher self. They may be intuitive, visionary, idealistic, artistic and magical.
LAVENDER AURA COLOR: Imagination, visionary and etheric.
SILVER AURA COLOR: This is the color of abundance, both spiritual and physical. Lots of bright silver can reflect an awakening of the cosmic mind. (7^th chakra or higher self)
Bright metallic silver: Receptive to new ideas; intuitive and nurturing
Dark and muddy gray: Residue of fear is accumulating in throughout the body and chakra centers, with a good potential for health problems, especially if gray clusters seen in specific areas (chakras) within the body.
GOLD AURA COLOR: The color of enlightenment and divine protection. When I see this within the aura, it means that the person is being guided by their higher self. This person is good at protection, has wisdom, inner knowledge, has a spiritual mind and of course an intuitive thinker.
BLACK AURA COLOR: Draws or pulls negative energy from all around “like a sponge”, and in doing so creates chaos. Usually indicates long-term unforgiveness (toward others or another) collected within specific chakras within the body, which will eventually lead to health problems.
Clear AURA: Spiritual, etheric and non-physical qualities, transcendent, higher dimensions. To me, it is a neutral vibration.  
DIRTY BROWN OVERLAY: Someone who really needs the energies so they suck it up from people around them. They specifically hold on to energies. They are insecure in many ways. Low self-esteem.
DIRTY GRAY OVERLY: Same as above.