Yes there was.
I can't remember for sure if we did them in the plant or not, I thought we did at least the base two tone paint work.
I tried to find a pic of one of the trucks online, but so far no luck.
IIRC, they looked like the one on this sweatshirt.
I'll ask some buddies that worked in the paint department and see what the have to say about them.
It was actually Scott Sieveking (the guy that used to run Monster Mopar) that did these sweatshirts and he sold them in the plants (I was one of the guys that sold them for him).
I've still got one of the sweatshirts packed away in a box in the basement.