This probably could be in originality section.
How the cowls are painted on Z-striped cars is often discussed. So here's some pics.
Here is an original owner yellow car. 05A NOR
The green one is not my Z, but it's really close. Mine has a bit more white on the driver's side, but it clearly fades away to the green underneath just like this car.
Pacers were done differently.
Picture courtesy of SCW / Brian Henderson. 03B NOR
They really didn't want the orange everywhere on the NOR pacers so they were masked off. I've seen LOS pacers with coverage all over the top of the cowl.