Shading color model

Quick answer：

A 'shading color model' typically refers to a system or method used to represent colors on a digital device, such as a computer screen or a smartphone. It involves the way colors are mixed and displayed based on varying intensities of red, green, and blue light. Common shading color models include RGB (Red, Green, Blue), CMYK (Cyan, Magenta, Yellow, Key/Black), and HSL/HSV (Hue, Saturation, Lightness/Value). Each model has its own applications and characteristics in image processing and color representation.