I'm not sure I would characterize the roof paint job as 'incorrect'. I have had a bone stock S3 109 (marine blue) station wagon with a limestone roof, My son has one now, which came from Kenya, and I know of another S2A 109 close by with a limestone roof, limestone sunsheet, and pastel green body.
Well, I never said it was incorrect. I was talking about the originality of the North American trucks. The paint scheme depends on the market.
-All North American 109 station wagons from 1958-1967 had tropical tops with Limestone sun sheets and body color roofs. And the OP's truck originally had this scheme as you can see.
-'67 was the last year for the 109 wagon in NA.
-Then, after the 1968 model year, coinciding with the migration of the headlights to the wings, the roofs and tropical tops were monochromatic in either white or Limestone. Wheels to match.
For example, a friend's 1970 Series IIA 109 station wagon is Marine Blue with white wheels, trop top and roof. It's a home market model.
Anyway, I can't wait to see how this resto progresses. Beautiful so far.
'60 SII Station Wagon
'64 SIIA 109 Regular
'68 SIIA 88 Station Wagon