Food colorings, both natural and syntheticare substances, are sometimes added to enhance appearance of food and thus adding to it's appeal. Temperature changes and exposure to light can contribute to color loss and food colorings have often become a regular component of the manufacturing process. Alternatively, food colorings may be introduced to create an aesthetic effect as in candies and frostings. Small bottles of liquid food coloring, usually in primary colors, can be found in the baking aisle of most supermarkets. Food coloring pastes, which blend well with fat based mixtures, can be found in specialty baking stores.