Flukes are probably my #1 confidence bait as long as the water isn't absolutely chocolate milk. They do a lot of things well for a soft plastic.
My two top colors are Sungill (which I don't think is a regular color for Zoom) and Albino - basically a bluegill color and a shad color. On the Sungill I often dip the tail in chartreuse. I use both in clear to stained water, but don't tend to use them much in muddy water. I occasionally use a weight if I want to fish them in 10'+ deep water, but far more often I fish them weightless in water <10'. They are great in thick vegetation, as long as you keep that hook buried. I actually strongly prefer them in vegetation.
Weight really depends on the speed and depth you want to fish. 1/4th, for a fluke, is on the heavy side for me. I want to fish it slow and shallow, so I would go with 1/8th. Since it's imitating a baitfish, I want it throughout the water column. Weights are probably best on stuff you want to imitate on the bottom - crawfish style and worms.