There are two basic blades combinations for muddy water in my personal opinion—double Colorado and Colorado/big willow leaf. Though I’m sure there are a couple dozen other combinations that could get bit in low-visibility situations, keeping it simple with these two choices gives me plenty of opportunities to get bit and keeps me from running myself crazy guessing between 20 different baits.
A simple 3/8-ounce double Colorado spinnerbait with something near a No. 5 for the bigger blade and a No. 3 for the smaller one works extremely well in really muddy situations, especially when the water is cold. I’ll typically pair this combo with a white skirt and white trailer so the entire bait is reflecting as much light as possible. Then, because of the big Colorado blades, I can slow roll this bait in an upright position right along side the cover where lethargic bass are hunkered down. In warmer water, you can go with a slightly smaller blade combo to speed the bait up a little or move up to a 1/2-ounce head for the same purposes.
The counterpart in my two spinnerbait tackle box is a big willow leaf/Colorado combo. A No. 6 willow leaf blade gives off a whole lot of vibration. The thump is sharper with a Colorado blade actually and a little duller and slower with a willow leaf this size. Pairing the big No. 6 willow blade with around a No. 1 Colorado, you have a bait that can be fished super slow with a lot of vibration but not as fast and hard of a thump. This is the combo that I particularly like when the water is in the off color to muddy range, but not chocolate milk. Pairing this spinnerbait with a chartreuse skirt and gold blades, I have an alternative that contrasts the double Colorado spinnerbait in a few different ways.