Why is that if a designer can choose two colors for design, a great many of them usually go for black as one of them? Why not choose two bright colors, like red and yellow, for example? The reader will find the answer in the following pages, but they will also come across examples to the contrary. The evocative power of the combination of certain colors (for example, using red and yellow to reflect the Chinese flag) is a useful resource when designers need to overcome the language barrier and make it easier for people all over the world to understand a specific design.