Chakra is actually the Sanskrit word that would mean wheel. The human body includes seven important chakras and also many minor chakras. These 7 chakras start from the bottom of the backbone and finish on the top of the head. Basically, those chakras possess the wheel of continuous revolving and rotating energy.
Stimulation for each chakras come from its individual and complimentary colour as well as a range of gem stones. Basically, these chakra colours consists of the 7 colours of the rainbow; red, orange, yellow, green, blue, indigo and violet. However, do not go overboard in opening your chakras as too large an opening may lead to excessive universal energy coming into your entire body.  that will consequently lead to an energy overload.