Rarest Paint Color?

[original_balzer]

I had a 72 blazer that was "dark olive metalic" A few years after I got rid of that a friend got a 70 blazer that listed its paint as "dark olive metalic" both had the original paint but the 70 was more of a pine green(dark) and my 72 was more like grass green(medium)
Also his metalic seamed to be a silver my metalic seamed to be a gold. (maybe that was the differnce?)

Doubt its a rare color but always thought that was weird they listed the same but where totaly differnt colors.