In December of 1978, the Environmental Protection Agency (EPA) proposed hazardous waste management standards that included reduced requirements for several types of large volume wastes.
Sometimes they have a black or olive-brown base color. Some have a lighter tan base color. As with most snakes, the belly is a lighter color, usually a yellowish cream color. Some specimens have lighter-colored bands running the length of their bodies. Refer to the king cobra pictures above.
These snakes are also found in bright greens, yellows, even down to Olive green colouration. Sometimes they are also found with almost black on top, with a bright yellow belly! (this gives the impression and the nick name of a yellow belly black snake, of which there is no such thing. Another blue snake is found in Malaysia, Malaysian blue coral snake.