Unsurprisingly, there have been a lot of discussions about colors over the years. Here is what I think I remember about what's been mentioned so far.
1. Stealth. Although this hasn't come up as a finish option for all instruments, it has been done, of course, on the Bongos and then there was the Onyx Sterling a while back. I have no idea what's coming, let's get that out of the way right now, but a Limited Edition is generally available on almost all instruments. That means new hardware for ALs, Axis', Stingrays, Sterlings....nah, my bet is against Stealth.
2. Chrome. Eh............no.
3. Some sort of sparkle. Never bet against sparkles! The Blue Dawn is a particularly beautiful example; I know we forumites have our own individual ideas about what other sparkles were attractive - Burnt Apple and Autumn Redrise come to mind - but if they'd been that popular, we'd still have them available as options. Never say never, said the man with the green basses.
4. Seafoam Green. I seem to recall BP saying that he wasn't going to duplicate any Fender classic colors. On a personal level, I'd love to see what a Seafoam Green Bongo or Albert Lee looked like, but if memory serves, this particular color came up before with a cool reception from the boss.
5. Sonic Blue. See Item 4, plus this year's LE was a blue.
6. Sterling Silver (my name for that color on Myung's sixer). Either Drew or Jon (enjoneer) said it was pricey to paint; how much of an upcharge are you guys willing to absorb? Sure is pretty.
The above represents only MY opinion, and I'm not an employee, so take it for what it's worth.
Buttercreme came out of left field last year; Blue Dawn was an old fave brought back to life - so who knows, really?
Not I.
Jack