Orange is a warm color because it is the marriage of red and yellow, and it's considered a happy and lively color. It represents Halloween and Thanksgiving and is the color of autumnal landscapes and fire's flame (Figure 2). Not as energetic as red, it is known to "...stimulate creativity and ambition along with energetic activity" (The Power of Color, p.15). It has a luminous, glowing quality that captures our attention. Orange is the color used for construction signs on roads and highways. It is a popular color in sports as seen on many jerseys (oftentimes coupled with blue, its complementary color). It is not considered an elegant color.
Figure 2 The color of autumn, orange, is clearly apparent in this photo from the city of, what was once called, West Berlin.