In the experience of life on earth we have a spectrum of light we see reflected in a rainbow.
The human body has two main light frequencies. One is silver, electrical light that comes from the earth upwards. The second is gold light that flows through the body from the top down and is connected to the sun. When consciousness moves from the head (pineal) to the heart, and is anchored there, we radiate the connection of gold light. This is spherical in nature.