How do you make a car use the color selector?

I'm trying to figure out how to make a vehicle be able to use the color selection menu.

 

Look into BeamNG cars' info.json, maybe will help. There are colours.

 

I know there are colors there, I'm asking how do I make a car that is always a static color use the color selector?

 

I think it's defined in the materials.cs file.

 

dont you have to add this into the materials.cs as well?

Code:

    instanceDiffuse[2] = true;

 

Problem resolved

 

Oh, so I make a white texture (_d) and whatever should use the colour selector will be transparent? And colours from other materials using the same texture but not using the colour selector will be in the _c file?