As they went down the assembly line, the cars with stripes had the cowl area painted the color of the stripes. Of course the cowl was off. This overspray was not taped off but painted by "a good hand" so the cowl area looked cleaner when the stripes were applied on the cowl itself and hood. When the cowl was put on the car the vents that you see into looked like a better paint job instead of dry overspray. I might of used too many words. Hope you are not more confused.
Sam