Have a body shop mix you a pint or quart of the original green for the inside. Not sure about other paint manufacturers but the Dupont vinyl (semi gloss) was sprayed with no activator or reducer.
As for the seats, cozy up with a good upholstery shop. We have one near here in Dover De and he has lots of the old books so its pretty easy to find what you had and match it to something you like and/or is readily available today.