An object’s wireframe color, also known as its object color, is the color assigned to it by 3ds Max at random when you first create it. 3ds Max uses this color to display the object in the viewports, both wireframe and shaded, until you assign a material to it. The wireframe color is useful for various purposes, including organization and identification, and you can even use the color as a material component.
Wireframe color applied as ink color in the Ink ‘n Paint material using the Object Color shader
Following are some topics that cover usage of the wireframe color: