My older brother had a 1970 Swinger 340 in 1976. It was definitely the lighter-brighter Sublime variant of the colour.

Years later in the 1980s a good friend of mine bought a 1970 Swinger 340 from the original owner. The car had original paint on it, bench seat with 3-speed manual. It was definitely the slightly less bright Greengo.

Both were Canadian cars, but only one lime green is shown on that chart, so there’s another little mystery to figure out.