YELLOW
If yellow is present in someone’s Aura, it may indicate; Joy, Freedom, non-attachment, intelligence, thoughtfulness and a high spiritual development. People displaying yellow in their Aura, especially around the head are generally analytical and logical. Yellow aura individuals also tend to have analytical brains, preferring hard data and rigorous planning over emotional arguments and winging it.
Spiritual teachers will show a strong yellow halo around their head. However, they may also be prone to self-criticism but generally they are full of inner joy and are not attached to anything.
BLUE
Charismatic, honest and eloquent. A master in the art of communication. Blue Auras can show a relaxed, balanced person with survival instincts particularly in nature.
Blue Aura people are known for their caring nature. They want to help others no matter what. They value honesty and prefer to solve disputes and debate issues using words rather than action.
Electric blue however, can override any other colour in the Aura, when that person is receiving and/or transmitting information in a telepathic communication.
A darkening of the blue could indicate physical problems related to thyroid issues. If the dark blue has a slightly purple tinge to it, or you would describe it more as a deep blue than a dark blue, then it is very likely that this is a good sign. Usually, the emergence of purple in an aura means that the person is experiencing an increase in psychic ability and metaphysical connectedness.
This is especially the case if the purples are concentrated around the edges, as this is where the majority of aura interactions happen.