various color expressions

Quick answer：

Color expressions refer to the way colors are described and categorized. They include terms for the primary colors (red, blue, yellow), secondary colors (green, orange, purple), and tertiary colors (created by mixing primary and secondary colors). Additionally, there are adjectives used to describe the intensity, hue, and tone of colors, such as 'vivid', 'muted', 'pastel', 'dark', and 'light'.