Grey is the colour of all colours combined. Neither yin nor yang, black nor white, it embodies the Middle Way. A mind dwelling in "nowhere', mind entrenched in Zen, a mind unpretentious in nature. It is a colour that does not flatter. A colour derived from ashes, that which we will all return to in the end. As a result, it is the colour of the robes of Korea Zen monks- embodying this spirit of nothing. Kim Kyoung Soo's grey and white teawear also embodies this spirit.