There are 24 colors:
Red-brown series: crimson, scarlet, vermilion, rose red, orange red, earth red, brown red, ochre, ripe brown and flesh color.
Yellow series: orange, khaki, dark yellow, medium yellow, light yellow and lemon yellow.
Green series: dark green, dark green, olive green, medium green, pink green, light green, yellow green.
Blue and purple series: blue, ultramarine, sky blue, lake blue, violet, violet.
High-grade ash: orange ash, yellow ash, purple ash and blue ash.
Gray scale: coal black, titanium white, Payne gray.
Special colors: phosphor, fluorescent orange, fluorescent yellow, fluorescent green.