Another point to ponder, military vehicles normally come painted OD from the factory. When something like a bike/ATV doesn't, it's usually just spray painted in OD or black to take the shine and all off of it. When one of our GOV's was involved in an accident, the damaged area was repaired, masked off and painted. We had this nice square area that was 4 or 5 shades darker than the rest of the truck. I've seen the military use motorcycles, ATC's and ATV's along with the assorted cars, trucks, vans etc, but I have never seen a mini-bike in use. Motorcycles, ATC's and ATV's were used by Special Tactics, Para-Rescue, Combat Control Teams, etc in the AF. I can assume the same holds true in the Army.
Mike