A problem will always result in a change in the flow of energy, and thus change the biofield. Many gifted healers use this information picked up through their hands, eyes, or other senses to assist people in putting energy back into their biofield in areas where it is not flowing properly, and when that happens a noticeable change occurs. Using a specially developed camera to take a photograph of the biofield, one can look at their biofield and asses the strengths and weaknesses to some degree. It also tells a lot about the way you perceive your life to be and the energies that you are allowing into your life, as well as those that you are giving out to the world. The colors, size, and intensity of the biofield is very important as well.
Different colors indicate different levels of emotions and physical well-being.
There's not a perfect color, however, as they are all only indicators of where we are in a moment of time. Some people have extremely strong, powerful biofields and they have an immediate effect on others. For example, notice when certain people enter a crowded room and their energy is felt by everyone. Sometimes the whole crowd stops conversing for a few seconds while they check out the source of this energy, even though no one is aware at the time. I first had my aura or biofield photographed in 1989 and was very impressed with what the man who took the picture was able to tell me about myself from that piece of information.