FK5 seemed to be a very popular color across all types of Challengers in 1970. Is it because it was a new color, then disappears for 1971. Lots of other changes in colors were done and you have to wonder why. I can see dropping some options if they were never click off in the sales box but colors seem to have the own reasons.
Bronze was popular then, and it seems it was a color that was popular among different types of cars (A-, B-, C-, and E-bodies).
FK5 may have disappeared after 1970, but it was replaced by GK6, which is a similar color.
