"Auras are commonly associated with people. Sometimes we even use them to describe people: "He has an aura about him," or "She just has a glow about her". But in fact all living things generate this field of energy. When associated to a person, the aura can provide insight into the spiritual, emotional and physical aspects of the individual.
Life is full of color and like so many other things on your path, color also has meaning. They are representations of messages from your higher self, God, dreams, whatever the label. But you don't have to be a Metaphysician to understand the importance of color in your life. It exists in every day experiences.
Many people associate the color white with God, pink with love and purple with royalty or spirituality. The following is a brief outline of primary colors and their common interpretation."
More info... How to Read Auras: What is the Meaning of Each Color?