Everything said and done, there are only TWO colors acceptable for the Challenger: Plum Crazy or White.
Now, the trouble with Plum Crazy is that the Challenger is a LOT of car to be purple the same as it is to be orange. You would obviously need at LEAST as much black striping as our associates with '08 Hemi Orange have. Or better still a la the 1970 model a black vinyl top! Unfortunately, Dodge doesn't offer you the vinyl option. (Damn modern corporations and their anything-for-the-bottom-line philosophy!)
Hence, the only REAL solution to the color proplem is to emulate the legendary Brother K, that soul hero in his soulmobile, and go with Stone White which is a hell of a lot better than Dodge's Alpine White was in the '70s.
Oh...yeah. I ordered a white one. And my '70 DID start out as Plum Crazy with a black vinyl top and ended up '82 Corvette White. But don't think I'm biased when it comes to colors.