My Dart Swinger Project!

One paint code two names, Dodge boys and Plymouth guys had an in house revelry amongst themselves in jest or jealousy. For example Dodge called their Plum Crazy Metallic VS. Plymouth and their In-Violet Metallic. As in your case Deep VS. Dark Brunt Orange Metallic.
Paint Codes Reference: 1960-1971 Dodge/Plymouth Paint Codes

K5 paint code would have metallic, and pearl, and iridescent, and pigments, all part of the paint receipt. Looks to be an 1970 early 71 paint, PPG code 2135.....
Dodge Color Codes - orange Paint Cross-Reference
I like the color, I would get a higher priced clear to cover the base coat, good luck with it..........