you could try a black body really bright chartreuse curl tail jig and cast and retrieve. Tip it with a chartreuse crappie nibble. There are times I have done better in muddy water casting a curl tail or curl tail on road runner head because the wake of the lure tips them off with their lateral line,and the black and chartreuse has a particular contrast that also helps them. A chromaglow chartreuse nibble adds a scent trail and a target for them.

I have on occasion caught fish in muddy water with a bait that had a natural color,very little signature in the water,fished slow to hardly moving below a cork.....who can explain it. It seems the longer its muddy the better fish adapt. If you fish much in fertile delta bottom waters in flood plains and the "sippi" your gonna fish muddy water a lot...and you just get use to it. Predator fish actually take advantage of that murk to catch baitfish often times.