RT:
I've studied the book you're referring to, and it seems that the good Doctor Kageyama knows what he's put in print, right up to the point where he's pitching the color selection kit. From what I've seen, (admittedly, not the entire kit), it doesnt seem to be worth the money.
Dr.K. covers the issues pretty well, and his photo plates tell a pretty good story.

Anandromous fish seem to see the greens and blues well as they enter the rivers, and then due to a physiological change brought on by either fresh water or spawning/ maturation cycle, their visual responses shift to reds, and longer light wave colors.

Steelhead appear to change within one to three days, and salmon seem to take a little longer.
Local water conditions do have an effect.
In Milky water, high contrast or lots of flash colors seem to work better, where they cant see very far, and all they seem to get is a shadow.

I've used the theory, and it seems to work. Since changing color selection accordingly, my catch has improved, and now I'm concentrating on presentation, which for drift boat use is largely a matter of finding the seam where they are holding. Migrating fish dont like to bite, sorta like they would rather keep moving, and holding fish will, but mostly if they're holding by choice. If they're spooked into a holding mode, they'll bite, but only if they're P.O.ed into it.
That's about as much as I'm gonna reveal without exposing ancient family secrets, unless I'm coerced by cash or national recognition & fame.
Good topic, Steve, and good luck.
BTW, I've been looking for your articles, but havent found any.. whazzup?