I don’t think they'll offer more than 1-2 real impact colors (sublime, hemi orange, plum crazy) at a time ala Charger. They will probably swap out impact colors every few years. For example the Super Bee Charger color this year is not detonator yellow but b5 blue and the Daytona color is Hemi Orange. I guess the same will be done for the challenger. They are seven colors at launch, so they cover everything but earth tones, so probably that olive or maybe a darker grey will be added.