One problem with the CRG statistics is that they are biased towards surviving cars. The "exotic" colors such as Corvette bronze, LeMans blue, Rallye green and British green were favored by Z/28's, big block cars, rally sport cars and so forth. These cars were preferentially restored and maintained, and thus their paint usages are listed higher than what probably occurred. This statistical error was noted and corrected only for pace car colors as stated on the CRG web site. They also incorrectly state that a handful of colors were discontinued in '68 (the colors were removed from the dealer brochures, but were still available).
Corvette bronze is a beautiful color in my opinion, especially when mated with black rally sport body sill, black side stripes and black rear tailpans as found on big-block cars. I suggest it's rarer than the 7% listed on the CRG web site, but by how much I couldn't guess.
- Erik -