In the world of Japanese ink wash painting charcoal is described as containing all five colors. The color black makes one think of night, but then that idea leads one into the bright white light of the morning and lavender sunset sky. For SHADES series, silk noil fabrics were dyed with different sources of tannins, such as myrobalan, walnut, chestnut, oak gall and iron as mordant to create different shades of charcoals. Some are overdyed with natural dyes, which produce pinks and yellows. Indigo and mineral pigments from rocks were also used to paint onto fabrics.