Color is one of the important elements to convey visual information, as well as an important part of food packaging and sales, and plays an important role in beautifying goods.

Green is used for paper food packaging box, green and blue for many beverages, dark red for many wines and pastries, and pink for many children's food and food products; Cosmetics industry usually choose rose, pink, light green, light blue and dark coffee color, highlight the warm and elegant emotional appeal; The clothing industry often chooses dark green, dark blue, coffee or gray as the main color to highlight the beauty of calm and classical elegance.