There is beauty in all colours- why are there few blues (lobelia), indigos or violets found in earthly plants, with the exception of a few flowers which are spiritual like lavender (meant to reduce stress, acts as a nervine, relaxes tension), lotus, crocus,iris or clematis. .
The red embraces the fire element of the earth in formation and volcanic expression;
the orange mediates reproduction and creativity, from the red into the yellow, into identity and confidence, then yellow moving into the green of the heart space, of compassion and caring about others, from emotional intensity of the yellow space into the mellowness of the green refined emotional qualities;
we then can appreciate the soft blues of the throat with correct and appropriate speech, the indigo of the mental abstract virtues, with visioning, and then the violet spiritual vibrations of the forehead/inner world and crown connection to the Higher soul and the Father/Creator/Source.
Just as the colours of the rainbow represent the spectrum of light and each colour has its innate qualities which interact with the bodily functions we must recognize that there are seven rays which govern personality and that knowing the qualities of an individual makes it easier for us to interact with them peacefully and productively.
Grand Master Choa Kok Sui has assembled a brilliant book called : “The Chakras and their Functions” which details the relationships of colour and function to each of the eleven chakras in the modern pranic healing model. This book is available on www.amazon.com.