Moline called that plow the M550 series. As you know it is a late model Oliver 3241 plow.
You can get the correct red paint from an AGCO dealer, but if it was mine I would use the ford tractor red that was used on their tractors from 1958 to 1964. As for decals, again if it was mine, I would go to a decal shop with the correct measurements, and have them made. Probably a lot cheaper, too.