Paint codes and primers

[Jay Darst]

Took the Bird to the local Truck wash for a bath. High pressure blew
some paint off in a few small places. I can see what appears to be
galvanized steel where the paint is missing.

How do I acquire the right color paint?

What preperation and/or primer (to be applied over the galvanized
metal) should go on first?

Anybody else had any experience with touching up their paint?

Thanks
Jay Darst
85PT40
Springfield, IL