PCB design each color

Quick answer：

PCB design refers to the process of creating the layout of printed circuit boards (PCBs). Each color in PCB design typically represents different layers or components. For instance, green usually denotes the main copper layer, while other colors like red or blue might indicate specific features, soldermask, or silk screen layers. Designers use various colors to differentiate between copper pours, traces, vias, and component locations. This helps in creating a well-organized and functional PCB.