Color inversion is a technique used in digital image processing to reverse the lightness and darkness of each pixel in an image. It essentially flips the black and white values, with black becoming white and white becoming black. This can be done manually in image editing software or automatically through algorithms. The result is an image that appears as the mirror image of the original, in terms of brightness.

This phrase seems to be a linguistic confusion or a typo. It could be interpreted as asking for the color that corresponds to a specific color. In such a case, the answer would depend on the context of the colors being referenced. If you are asking about color theory, each color has a corresponding color, such as red corresponding to magenta or orange corresponding to yellow. However, without a clear context, it's difficult to provide a precise answer.

The choice of color for a light gradient depends on the desired aesthetic and the context in which it will be used. Neutral tones like light blues, soft greens, or pastel pinks are often preferred for a serene and harmonious look. Brighter colors like light oranges or yellows can create a vibrant and energetic feel. It's important to consider the color theory, such as complementary colors or analogous colors, to create a balanced and visually appealing gradient.

The term 'Color L* < 80' refers to a color metric in the CIELAB color space. In this system, L* represents the lightness component, with lower values indicating darker colors. A color with L* < 80 is considered to be darker than the standard neutral gray. This is often used in colorimetry and color science to describe the darkness of a color sample.

Color pictures refer to images that utilize various shades of colors to convey information, emotion, or aesthetic value. They are widely used in art, design, advertising, and communication. The study of color pictures involves understanding color theory, composition, and the psychological effects of colors.

An 'advanced color number' refers to a specific shade or hue of a color, often used in the context of design, art, or technology to denote a precise and unique color. It can be a part of a color coding system where each color number corresponds to a particular shade or tint.

18k refers to gold jewelry that is 75% gold by weight. Various colors could refer to the different hues of gold alloys, such as yellow, white, rose, or green gold.

Qing Shui, often translated as 'clear water', is a light blue color reminiscent of the color of clear water. It is commonly used in design, fashion, and art to evoke a sense of calm and purity. The term 'Qing Shui blue' specifically refers to this shade of blue, often seen in traditional Chinese aesthetics.

The term 'pure copper color' refers to the natural brownish-red color of copper. Copper is a soft, malleable metal with high thermal and electrical conductivity. Its color can change with exposure to oxygen and other elements.

Fanggu color refers to the traditional colors used in ancient Chinese art, architecture, and ceramics. These colors often include red, green, blue, yellow, and black, and are characterized by their rich cultural significance and historical depth.

Color matching refers to the process of combining colors to achieve a desired aesthetic effect. It is a fundamental concept in art, design, fashion, and other fields. Color matching principles include complementary colors, analogous colors, and triadic colors. These principles help in creating harmonious and visually appealing color schemes.

The color of a lemon is typically a bright yellow. Lemons can also have a green tint when they are unripe or a more orange hue when they are overripe. The color is due to the pigments in the lemon peel.

Color hunting refers to the practice of collecting and using color palettes from various sources such as nature, art, and fashion to inspire and create new designs. It involves identifying and documenting colors that resonate with a particular theme or aesthetic.

Golden refers to a rich, yellowish color. It is often associated with wealth, luxury, and warmth. In art and design, golden tones can evoke a sense of elegance and opulence.

Color mixing refers to the process of combining different colors to create new shades or hues. It is a fundamental concept in art, design, and color theory. In the visual arts, artists use color mixing to create specific moods, emotions, or visual effects. In design, color mixing is used to ensure harmonious and aesthetically pleasing color schemes. The primary colors in the subtractive color model (used in art and printing) are red, blue, and yellow, while the primary colors in the additive color model (used in digital displays) are red, green, and blue.

The color yellow is a primary color that is perceived as a higher lightness than its complementary color, blue. It is often associated with happiness and warmth. In art and design, yellow can evoke a range of emotions, from cheerfulness to caution, depending on its context and intensity.

Brown is a warm, dark reddish-brown color. It is often associated with soil, wood, and certain types of stone. In the context of a picture, brown would refer to an image featuring shades of this color. The specific image would depend on the subject matter, such as a landscape, a texture, or an object.

The term 'style color' refers to the use of color in design to convey style or aesthetic preferences. It involves selecting colors that align with the desired visual theme or emotional response in a design context.

The term 'color sophisticated' can refer to colors that are considered stylish or high-end, often associated with elegance and refinement in fashion, interior design, or art.