B.K.
Your aura is your energy field around your body.It's colours reflect how you are feeling emotionally,spiritually,physically etc.
A person with a bright clean colourful aura is in a good space spiritually etc.
Dirty,muggy,dark auras also reflect whats happening in a person's life,trauma,ill health,depression etc.
You can get an aura photogragh done,research your local area.
I did and found it very interesting.
B.