Color is about sales and presentation.
According to FMIC, sunburst accounts for ~50% of sales, given the option. Natural (including blondes), white and black account for most of what's left. With very few exceptions, it's hard to move most other colors unless it's forced or extremely discounted. Whatever people say
(and people here always go on about, "why don't they make [X] in more colors?"), when it comes to actually parting with money -- and what else matters? -- they choke on those "other colors." In this stuff, ignore what people say; watch what they buy
So, if you produce other colors, you're usually going to take a bad hit on them. My old half-facetious "Law of Blue Guitars," which posits that you can afford your dream guitar if you can wait and stand it in blue when it finally gets dumped at long, long discount, is still pretty reliable. Green, being a scarier sales proposition even than blue, is rarely produced, but also gets dumped at incredible discounts (I've seen brand new MM Bongos in green dumped for ~80% off just to be rid of them).
Most people won't buy weird colors because they don't want to look at them, even when they thought they liked them at first.
They also don't want to look at you playing them, even if they don't quite know what it is that's turning them off [this sort of determination is at the core of commercial design].
If green or purple or whatever moved 50% of the new units, then it would be the right
color. When it can't sell 2% it's obviously the wrong
color and to be avoided in terms of not only presentation but resale (unless you're getting a huge discount on the front end and can take the hit when you sell).
If you're wired differently than the rest of the market and actually like weird colored instruments, enjoy the great discounts on them that will pop up from time to time -- but have some in more conventional colors for playing out.