题目内容：

Directions: Read the following passage. Summarize in no more than 60 words the main idea and the main point(s) of the passage. Use your own words as far as possible.

Right Colors for Restaurant Walls?

Have you ever noticed that many restaurants have red or orange walls? This fashion comes from the widely held belief that these two colors stimulate the appetite. Restauranteurs hope that by stimulating the appetites of their customers in this way, they can encourage them to order more food.

A large fast - food chain recently decided to test the belief that the color of the decoration affects how much food their customers order. This company has restaurants in major cities across the US and serves customers of all ages, including small children. The traditional decoration of this restaurant chain includes beige（米色的）paint on the walls. For this test, the company painted the walls in half of its restaurants orange, leaving the other half of its restaurants with their original beige walls. In order to make up for the possible influence of cultural differences between cities, the company made sure that in every city where its restaurants are located, there were both restaurants with orange walls and restaurants with beige walls.

The restaurant chain kept track of exactly what foods were ordered in each restaurant for one year before the walls were painted, and then again for one year after the walls had been painted. They found no difference. On average, customers in each restaurant, whether is had beige or of the company said. “We have proven it.”

The wall s of all the restaurants in the chain have been restored to their original beige color. The company president explained that this color is part of the company’s image. Now that the study is over, people might be confused if they walked into a restaurant expecting beige walls and got orange instead, so the company president explained.