I'm in the process of de-rusting and refurbishing the rear half of my car's underbelly. The main color under there is the same as in this picture. It looks kind of like primer but I think it has a slight bluish tint. I think it a common color for multiple different body paint colors--so a lot of us probably have it on our 4th gens, Does anyone know what I have to use to replicate this color? ty

btw I lifted the pic from a google image search. If it's your car, I'm sorry, and thank you.

 

I haven't been under my car in a while, but I'm pretty sure the underneath was the same as body color.

 

Mine is similar to the body colour (bright green metallic), but with a duller finish (definitely no clear coat) and without any metallic.
almost like a green primer.
this is the same colour found under the hood.

Hope this helps you.