basspro has it. I think water clarity is one of the most important but overlooked factors in bait selection. Unless you know for sure theres a fish sitting where you're casting..a silent worm will be hard pressed to get a fishes attention in muddy water. A spinnerbait, crankbait, something moving faster and with vibration and/or rattle will definitely get some fat fishes attention in the haze.
Just as he said though, if its colder, a slower moving bait will have to be the ticket.
as a general rule, the less visibility, go darker, but sometimes a bright bait can work pretty well.
Clearer, go natural.