MY OPINION ONLY,
But I feel that a TON of these new colors, of coarse will catch fish, but will better and more often catch fisherman, bc they "heard" it was better, or so and so did a xx lb fish on this or that.
Find someone REALLY salty, someone who was around in the60's, 70's and early 80's and ask them if they HAD to have a huge spectrum of colors 9you'll find out that there where 4-5 colors that were favored), then think to your self, did the predominent bait, as in bunker, sand ells, "peanuts", sardines, mullet, etc.. start changing colors?
There is a couple of reasons why you might want to try a BRIGHT color like a parrot, as this will be better seen in stained water, so again IMO, there is little need to carry anything more than yellow, white, black.
I will tell you 2 instances where I will add green or blue, snappers and mullet. Other than that, keep I it simple.
This is my mainstay variety for the fall run on Long Island, and what has worked for me so take from it what you can.
BTW "bottles are good for towing sand eels" came from a famous book qritten by a dog shooter, and these do a hell of alot more than that in the right place and condition. Although I personally never did anything over a mid 20 on one, these "bite in" when all else fails, and super strike bite even better due to the sharper lip. I think Mark Malenovskys 64 in Montauk was caught on a YELLOW BOTTLE.