Change colour/wheels of trailer??

Is it possible to change the colour of the trailer? Also the wheels, right now I can't do any of them and there doesn't seem to be a mod for this.

I wanted to do this for some cool pictures with a car and matching colour also wheels.

 

Pay attention to the top- and right side bar for the following steps!
1. open the World editor (F11) and select the car (player) on right side drop down menu


2. go to materials editor (F4)


3. select the wheel


4. play around with the layers, then save by click on the floppy disk! If you want the original color back, delete the materials.cs in beamng/ vehicles/ common/ wheels.

 

That was very usefull, and something new. However I wanted to change the Wheels of the trailer to Folk, or enable wheel change in the parts menu.
--- Post updated ---

Ok. Fixed now, for some reason I didn't have options for parts with the trailer. Now I have done something and I have all the changable parts.

 

Oh, i misread something, but i think you can change the color of the whole trailer with this!?

 

The result. Decent.

Ok. Fixed now, for some reason I didn't have