CROWN CHAKRA

Crown chakra is about wisdom and being one with the world. When this chakra is open, you are unprejudiced and quite aware of the world and yourself.
If it is under-active, you're not very aware of spirituality. You're probably quite rigid in your thinking.
If this chakra is over-active, you are probably intellectualizing things too much. You may be addicted to spirituality and are probably ignoring your bodily needs.

VIOLET/PURPLE governs the CROWN chakra, at the top of the head.
BEAUTY, CREATIVITY, INSPIRATION

Related organ: brain

Endocrine gland: pineal gland.

Associated problems: depression, Parkinson's disease, Schizophrenia, Epilepsy, seniledementia, Alzheimer's, many mental disorders, confusion, and dizziness.
Personality Traits: Inspirational leaders, kindly and just, humanitarians, self-sacrifing, visionary, creative, and strong mentally.
Violetrelates to self knowledge/spiritual awareness. It is the union with your higher self, with spirituality, and your higher consciousness. Dis-ease can result with an in-balance of energy in this chakra, either too much or too little. The violet energy connects us to our spiritual self bringing guidance, wisdom and inner strength and purifies our thoughts and feelings giving us inspiration in all undertakings. Enhances artistic talent and creativity.

positive aspects of violet
- a reverence for all life
- self sacrificing in the service of others
- idealism
- an ability to see the appropriate route for the benefit of the higher self

negative aspects of violet
- no concern for others
- feelings of superiority
- lack of contact with reality

Third Eye chakra
The Third Eye chakra is about insight and visualization. When it is open, you have a good intuition. You may tend to fantasize.
If it is under-active, you're not very good at thinking for yourself, and you may tend to rely on authorities. You may be rigid in your thinking, relying on beliefs too much. You might even get confused easily.
If this chakra is over-active, you may live in a world of fantasy too much. In excessive cases halucinations are possible.

INDIGO governs the BROW chakra or third eye, in the centre of the forehead.
INTUITION, MYSTICISM, UNDERSTANDING
Related organs: eyes, lower head and sinuses

Endocrine gland: pituitary gland.

Associated problems: tension headache, migraine, visual defects, short-sightedness, long-sightedness, glaucoma, cataracts, sinus problems, ear problems.

Personality Traits: Intuitive, fearless, practical, idealistic, wise, and a truth seeker.
Indigo relates to self responsibility - being responsible for one's own life, responsible to oneself to follow the soul's path and needs and trusting one's own intuition. (the ability to see things from a 'higher' viewpoint rather than purely for satisfaction of the ego or one's material comfort.).
The indigo energy connects us to our unconscious self, and gives us the experience of being part of the whole universe. Strengthens intuition, imagination, psychic powers, and increases dream activity.

positive aspects of indigo
- highly intuitive
- faithful
- clear sighted
- integrity
- orderly mind
negative aspects of indigo
- inability to trust intuition
- scattered mind
- inconsiderate
- blinkered vision
reference from www.spiritualhealingtech.com

And when it's activated,it looks like a golden lotus flower...