The postwar automotive market in the United States is full of spring marketing efforts to give sales a kick in the rear. When it comes to Plymouth and Dodge, one of the most famous features introduced in the spring was the pair of colors that are quite rare: FM3 and FJ6.


Those codes translate to Moulin Rouge/Panther Pink and Sassy Grass Green/Green Go, respectively. The magenta hue in particular commands a strong premium for any vehicle that came with it from the factory; the green, in comparison, is equally as rare but was carried over into the 1971 model year, so it tends to sit in FM3’s shadow.

Those colors were among a bunch of other options that were introduced in the spring, though many happened to be delayed from the model year’s introduction and were not introduced to spur sales. Below, you can find several new features available for the Dodge Challenger.


At the 2025 Muscle Car and Corvette Nationals, fans of these high-impact hues had the chance to appreciate the eye-searing goodness of Mopar A-bodies, B-bodies, E-bodies, and even a special-order C-body painted in one of these colors. Dig into the Spring Fever Invitational and find a variety of cars, engines, and stripes!
The production numbers stated are based on U.S. shipments and don’t include Canadian cars and exports, so the numbers don’t represent total production. That’s a quirk of surviving production records that is rarely explained in articles and literature.










