Operating in both the etheric and astral fields, the major chakras aligned along the spine have an entirely different role to the purely etheric ones. They are multi-dimensional in nature and translate energies between the energy bodies, stepping it up or down in frequency or vibrational rate, to be used at the appropriate level. They are therefore considered to be centres of consciousness and each one can rotate in either direction (clockwise - anti-clockwise), or indeed in all directions simultaneously, albeit at different rates. The table below shows the relationship between these major centres and the physical body, together with their notional colour. For the purposes of symbolism there is an association between the progression of rainbow colours and each chakra, however any colour can be normal when associated with a chakra as it describes the way energies are being expressed in the life of the person involved.