I would suggest folks look at it not as what color to "RESTORE" to, but what color is best when REFURBISH-ed or REFRESH-ed? Consider what would sell quickest and what would generate the higher ddollar sale.
I say that knowing how many folks take the word "restore"; to them it means to take back to original condition, which would answer the color question.
But to address the question in the manner that you meant: car colors tend to follow cycles that I can't cite but they are noted by the car industry. Years ago, burnt orange, copper, root-beer browns would not have been popular, today they abound. At one time pastels were strong, then metallics, and lately, opalescents or "pearls".
Z's from their introduction had "odd" colors that did and did not develop their advocates. The original "red" was seen as being "orangish", the "orange" was seen as "reddish", the "gold" was seen as "mustard", and the "yellow" was either too pale or too neon green. In fact, some earlier owners ended up with cars in colors they wouldn't have opted for originally, but that later grew on them and now they love.
With all that being said, my personal vote is for a non-stock color that both draws attention and is considered a color "in vogue".
FWIW
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