Auras.
The term “aura” was popularized by Charles Webster Leadbeater.
There are many auras, and some can be seen as different colors. They are each of different sizes (and some of different shapes and locations) and some are larger than I’ve illustrated here. Some are energy-fields which decrease gradually with distance, some are spaces with a precise boundary.
The colored aura, (not illustrated) is an ovoid spherical field larger than the body, which is one of the more common uses of the term and does not, as is sometimes believed, derive its color from a chakra, as might be obvious from the fact that the colored aura can be black, gray, white, pink, or brown, none of which exist in the chakra system. However, when the colored-aura does have a color of one of the chakras, the meaning of the color in the aura is similar to the meaning of the same color in one of the chakras. Black in the colored-aura relates to Eshu energy (and is not a “bad” sign). The colored aura can have a single color, more than one color, a gradual change between different colors, or various patterns.
The function of many of the auras is to protect the body-systems against unwanted energies, and also to some extent to act as awareness of things outside the body (which can also be seen as contact with desirable energies). Some auras also provide and modify energy for the entire body-systems. Some of the auras are somewhat split into left (female) and right (male) halves. The “7th body” referred to in some spiritual systems can in some ways be seen as part of the auras, but in some way part of a much larger system with a different type of structure.
There is a Core Aura which is narrower than the body and has some useful properties, but also typically contains significant aberrations. Outside the Core Aura are three sets of 8 auras (small, medium and large), and inside the Core Aura are 3 other sets of auras going inwards. There are also sets of downward-pointing hemispherical lower auras, going down from a few meters below the feet. These protect, and facilitate contact with, the lower areas relevant to the body.