Is a material (shader) that is a wrapper node, which means that you can connect any keyable attribute to this shading group, and then connect the shading group to an object. For example, you can connect an object’s translate position to a Surface Shader’s Out Color attribute to determine the object’s color by the object’s position.
Find this material in the Create tab.
The color of the material. The default is black.
The transparency of the material. The default is black (opaque).
The glow color of the material. The default is black, without glow.
Connect another attribute to this option to control the opacity of the material’s matte (alpha) channel.