There's two different coppers, original bed bath/ Sam Adams/performer copper and uline copper. That's pretty subtle though.
Similarly, 80s "true" gray and crate & barrel gray are definitely 2 different colors.
Chestnut Coppertone is also called "boobie pink"
I think spring green is also referred to as crate and barrel green.
If you go to fades, you have red. I believe all brownies and plainsman (white whales) are fades.
I'm not sure how you categorize the Westerner, but that can be added too.
A