Different node types are colored differently for easy identification. For example, animation nodes are a light blue, joints are green, and lights are beige.
To view a list or change node colors, open the , Select
Color Settings. Under the
General tab, expand the
Node Editor section, then expand the
Node Types section for the list of default colors used for each node type. You can customize the colors for each node type by clicking on the color swatch to select a color using the
Color Chooser.
List of Node Editor colors in the Color Settings.