watermelon is always a favorite. can't go wrong with black and purple either. actually two years ago we crushed em on one i called the strawberry shortcake. copper blades with red dots and a red stripe through the middle.
We use the larger harenesses, the ones with two hooks and uses wire (not the mono ones). the blades are shaped longer than they are fatter. never tried another size.
I think color depends on water conditions and part of the year. i usually throw the kitchen sink at em and see what they are hitting then adjust accordingly, but you have a good start.