Anything of a natural earth tone color is key! Most of the time if you pull up a insect species chart for your local lake, it will give you the common colors of local bugs and so forth that fish feed. Pumpkin Green, browns and blacks are really common colors regardless of location in the united states. I completely agree with Jerry, 9 x out of 10 people try to mimic a craw, water dog, shad, snakes, etc. These are a natural food source for bass and other predator fish...