Here is a link to a 73-74 Challenger with "Painted" stripes article;
Exterior Paint
Challenger Rallye still had the dummy air ducts on the front fenders with the strobe stripe extending along the door but the base models could now have a painted accent stripe that traced the upper contours of the body.
These are more and more rare each year because they have to be Painted back on, No stickers.
V6W was the code for the strobe stripes so I would think
V7W would be the code for the Painted stripe.