Following is a list of general colours and their associations with magick. These colours are important in many aspects of Witchcraft, ranging from colour magick to candle magick or just observing auras.
Colour Correspondences

The Elements - Colours and their Correspondences.

The Colours and their Correspondences. Within Magick or Witchcraft, each colour has an important magickal aspect, whether you are practicing colour magick or candle magick, the type of magickal aspect being manipulated has a corresponding colour.

The following list of colours and their correspondences within Magick or Witchcraft, each colour has an important magickal aspect, whether you are practicing colour magick or candle magick, the type of magickal aspect being manipulated has a corresponding colour. Black, for example would be used as a ward against negativity or protection. This is not meant to be a complete or definitive list, rather a more general overview of colours and their meanings.

Over time and with practice and intuition, you may add to this list and its magickal meanings, as with all things, these are meant as guidelines and visual stimuli, to help focus your visualisation more clearly. You may find different colours have different meanings than those given here, or if you need to perform some magick ritual on short notice, you can always improvise, if it feels right within yourself, then go with this gut feeling or instinct.

Plants have an affinity with air. Fire is natural to animals.

Table of Correspondences.
Colour Correspondence

Amber 

Deep witchery skills

Black

Ward negativity, Remove hexes, Protection, Spirit contact, The Universe, Night, Truth, Remove discord or confusion.

Blue (dark)

The Goddess (representative ritual candle), Water Elemental, Truth, Dreams, Protection, Change, Meditation, Impulse.

Blue (light)

Psychic awareness, Intuition, Opportunity, Understanding, Quests, Safe journey, Patience, Tranquility, Ward depression.

Blue (any)

Health

Brown

Earth Elemental, Endurance, Animal health, Steadiness, Houses and Homes, Physical objects, Uncertainties.

Gold

The God, Solar Energy, Power, Physical Strength, Success, Achievement, Mental growth, Skill sought, Healing energy, Intuition, Divination, Fortune.

Gray

Non-nature-type faerie magick such as communication with the faerie realms, travel to the Other world, Vision Quests, Veiling, Cancellation, Hesitation, Neutrality.

Green

Lord and Lady, Earth Elemental, Herb Magick, Nature-type faerie magick, Luck, Fertility, Healing, Balance, Employment, Prosperity, Courage, Agriculture, Changing direction or attitudes, Growth.

Green-yellow

To negate discord, Sickness, Anger, Jealousy.

Indigo

Meditation, Spirit Communication, Karma Workings, Learn the ancient wisdom, Neutralise another's magick, Ward slander.

Lavender

Spiritual development, Psychic growth, Divination, Sensitivity to the Other world, Blessings.

Orange

The God, Strength, Healing, Pulling things to you, Adaptability, Luck, Vitality, Encouragement, Clearing the Mind, Dominance, Energy, both Physical and Magickal, Legal matters.

Pink

Honour, Mortality, Friendship, Emotional Love, Compassion and Relaxation.

Purple

Power, Spiritual development, Intuition, Ambition, Healing, Progress, Business, Spiritual Communication, Protection, Occult Wisdom, Meditation.

Red

Fire Elemental, Strength, Power, Energy, Health, Vigor, Enthusiasm, Courage, Passion, Sexuality, Protection.

Silver

The Goddess, Lunar Magick, Meditation, Psychic development, Success, Balance, Wards negativity.

Variegated

Inner development through relaxation and introspection.

Violet

Self-improvement, Intuition, Success in Searches.

White

The Lady and The Lord together, Full Moon Magick, Purity, Protection, Truth, Meditation, Peace, Sincerity, Justice, Warding of doubts and fears.

Yellow

Air Elemental, Divination, Clairvoyance, Mental Alertness, Intellectual growth, Prosperity, Learning, Changes, Harmony, Creativity, Confidence, Communication, Study, Travel.