Germans in some parts of the war sent vehicles out of the factory in camouflage or in Panzer Gray, or tan, or even in primer red brown. After the vehicles were assigned to units, the unit would often repaint it to match local terrain.
Late war Opel Blitz van body trucks in late war tan.
Late war Opel, one tan with a green overspray camouflage.
The green one has tracks in the rear. Roco and Paul Heiser Models made excellent models of these trucks. Prior to those models being released we used to take the Airfix Bren Carrier set and remove the tracks from the carrier and put them on the back of the Roco Opel to get the halftrack version. The six pounder anti-tank gun in that old Airfix set was transferred to the American Army as the 57mm ATG.