I have researched colour therapy and I am particularly interested in the effects colours have on people. I will refer to the list below as a reference. I can pick colours for a particular mood or allow users to pick colours or pick an effect (calming, energizing, balancing, etc) they want rather than a colour.
Violet: Calming for body and mind. Good for meditation and prayer. Enhances purpose and dignity. Heightens our awareness and helps us to give of our very best. Purifying.
Indigo: Sedative. Helps to open up our intuition. The colour of divine knowledge and the higher mind.
Blue: Calming, relaxing and healing. Not as sedating as indigo. Also the colour of communication.
Green: Balancing, harmonizing and encourages tolerance and understanding.
Yellow: Stimulates mental activity, feeling of confidence. Helpful for study as it helps us to stay alert.
Orange: Warming and energizing. Can stimulate creativity. Orange is the colour of fun and sociability.
Red: Energizing, exciting the emotions, stimulates appetite.
Magenta: is the eighth colour in the colour spectrum and is a combination of red and violet, thus it combines our earthly self and spiritual self, thus balancing spirit and matter. It is uplifting and helps us to gain a feeling of completeness and fulfilment.
Turquoise: Cool and calming and good for the nervous system and immune system.
Pink: This colour soothes and nurtures. It helps to dissolve anger and encourages unconditional love.
Black: Used with another colour enhances the energy of that second colour. Black gives us the space for reflection and inner searching.
White: Contains all the colours. It emphasizes purity and illuminates our thoughts, giving us clarity.
The Seven Main Chakras and Seven Chakra Colours