The document discusses color theory and color schemes. It explains that red, yellow, and blue are primary colors that cannot be mixed from other colors. Secondary colors are made by mixing two primary colors, and tertiary colors are made by mixing a primary color with its neighboring secondary color. The color wheel is used to show primary, secondary, and tertiary colors as well as complementary, analogous, monochromatic, and discordant color schemes. Cultural differences in color symbolism are also examined, such as different traditions for wedding dress colors across cultures and the changing symbolism of the color green over time in Western culture.