"Chinese astrology teaches that there are five planetary colors: Jupiter the Wood planet is the blue-green of foliage and the sea; Mars the Fire planet is the red of cinnabar, an ore of the metal mercury; Saturn the Earth planet is the color of the yellow ochre of Central China; Venus the metal planet, also known as the Great White is brilliant silvery white, Mercury the water planet with no colour of its own is deemed to be blush-black, the colour of the night sky."