A billboard with bright red characters on a yellow background or white fonts will make people clear at a glance, beautiful and elegant, giving people a sense of style. After this billboard is made, the publicity effect will be outstanding and unforgettable, and everyone likes this effect. It will be of great benefit to improve the efficiency of this unit. Therefore, we must grasp the advertising!

1. A yellow background with black characters will give people a calm and serious feeling.

2. A yellow background with green characters will give people a youthful and relaxed feeling.

3. A yellow background with red characters will give people a warm and energetic feeling. This color scheme is commonly used in publicity.

4. A yellow background with blue characters will give people a fresh and comfortable feeling.

5. A yellow background with purple characters will give people an elegant and generous feeling.