Different things usually stand for different feelings. Red, for example, is the color of fire, heat, blood and life. People say red is an exciting and active color. They associate£¨Ê¹·¢ÉúÁªÏµ£© red with a strong feeling like   1  . Red is used for signs of   2  , such as STOP signs and fire engines. Orange is the bright, warm color of   3   in autumn. People say orange is a   4   color.