I agree with others it depends on time of year and body of water. The #12 Husky Jerks are a pretty hard to beat Fall trolling Mille Lacs. I do not think I could list one color. I have pounded fish with every color in the Husky Jerk rainbow, all depending on the night.
I also like Deep Tail Dancers in the Summer for Open Water trolling on the pond. Here, I do like the Firetiger and Clown baits. Like JB, I also like running the Deep Diving Reef Runners for this. Again hard to pick a single bait, but Cheap Sunglasses and BLack/Gold have produced for me the last two years.
The September Full Moon the Bent Lip Shad Raps in 7’s&9’s have put some nice fish in the boat also. With these, I have had luck with Perch, Firetiger and Doctored Chartuese Yellow backs.