What is the difference between oily colored lead and water-soluble colored lead?

The main difference between water solubility and oiliness of colored lead is that colored lead is soluble in water, while oily colored lead is insoluble in water. Water soluble colored lead can be blended with water, and colored lead can be blended with water. After coloring with colored lead, the color of colored lead will melt with water, resulting in the effect of watercolor blooming and gradual change. Oily colored lead is insoluble in water, and the drawn lines are very delicate, light in color, easy to color, high in transparency and easy to wipe.