Okay folks, I guess I need to clarify some things. I did not put the sand pigments on the truck yet. So, yes, the decals and everything else will be dusted and not so clean looking. The rain streaks will not look so stark either at that point. This will be the last thing I do after gluing the model down to some base so no hands touch it again. The stowage on the truck is not done yet either. It was still wet when I added it and I moved onto other things,like taking the photos.
I don't know about the color of the lights... I checked the trucks on Prim Portal and it seemed these were the colors. I'll have to recheck.
The fuel stains are meant to be dark since the fuel soaks up all the dirt on the vehicle plus what settles into it from the air. I like the passenger side better too, but I still think the driver's side is okay since that could be an additional spill or whatever. See the stain here:

I really appreciate the input.
Bob