Due to their appetite enhancing effect, using warm colors such as red and orange could prove to be effective in restaurants. Red is at the same time an attention grabbing color. As such it could attract attention to your restaurant. However, shades of red must not be used in abundance as this color is also associated with the inducement of anger. Another color that could be used in restaurants is green. Green has calming effects. At the same time it is the color of nature. For this reason people feel comfortable and peaceful in spaces painted in green. On the other hand, blue, due to its appetite reducing effect, must be avoided.