Another main step is to apply washes for shading and gradual transitions of tone. Shading is called Dang in Tibetan which is one of the special feature of Thangka painting. Shading is an important feature of thanka painting, taking up a large portion of the time, and is done very carefully and precisely. Shading in this context does not mean the treatment of light and shadow within the whole composition, for the distribution of light and dark is .