Coloring adds interest and appeal to the processed food. Butter for example has been colored yellow for centuries. One may not even like to taste the one in the natural color. Right from the ketchup, sausage casings to pizzas, all are colored to enhance the appearance. Depending on the food base, both soluble dyes, lakes ore the natural food colorings are used.
Color of the food is one of the major factors affecting the way people respond to food. Be it margarine, cheese, soft drink mixes, candies, jams and jellies, fruit flavored or gelatins, pudding and pie filling mixes they will seem attractive only when colored with the appropriate colors.