Material Editor
From BeamNG
Usage
To use this, you need to use the "move" item on the object editor. Select what objects material you want to change, and then go into the material editor. Near the cube, click on the circle that looks like a globe and then change it to the material wanted.
Other Features
-You can change the preferences of the material, like the diffuse with the "edit" button
-Make the object a plain color
-More experimental options