PM:
90% (or better) of those wide array of colors are designed to catch us, (the fishermen) and not them, (the fish)!

However, several of the color combinations work well under different situations. The main meal ticket for chinook is the chartruse head / silver body. This plug will work (I believe) in any stream that you find chinook. It just consistantly outproduces any of the other colors out there day in and day out. I'm not saying the others don't work, as quite often under the right circumstances they do. But, you can't go wrong with the old faithful...
As far as Nehalem goes, I've been hitting it on a regular basis, and have seen people pulling the wiggler's around without much success. They can be very effective a little later in the season or upriver aways. But, right now, in the bay, I'd stick with herring. Although, if the herring aren't working it wouldn't hurt to experiment with at least one rod!
Good Luck! -Marty P.