How to adjust the colors of red cloth, green cloth and blue cloth in gouache!

The main purpose of gouache is to control "water" and "powder", control moisture (no choice but to draw more), and control moisture well so as not to make the whole picture dim and gloomy. "Powder" means to make the picture always give people fresh and powerful vitality. Crimson, green and blue depend on the relationship between the main object and the temperature you want to draw. These tablecloths are just too cold or too warm, which is the most difficult to control. In the process of painting, their purity and brightness can be reduced appropriately! A little pastel painting may get extra points … Come on!