Additive colors are created by combining different colors of light. The primary colors of light are red, green, and blue. When these colors are mixed together in various ways, they produce a wide range of other colors. For example, combining red and green light creates yellow, while mixing all three primary colors at full intensity results in white light. This color mixing process is commonly used in digital screens, such as televisions and computer monitors, where tiny pixels emit red, green, and blue light. By adjusting the intensity of each color, screens can display millions of different colors, enhancing our visual experience.