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Color and style make a big difference so always have a good assortment of different colors, styles and lengths as well as a good supply of different worm weights. An assortment of weenie worms, craw worms, lizards, curl tail, finesse and ribbon-tail worms will cover nearly every situation.
In clear water, lighter, more translucent colors tend to work best: blue, green, pearl, smoke, etc.
In dark water, dark worms often produce the best: purple, black, brown, etc.
Two-toned worms are better when the less dominant color is a highly attracting one, such as bright yellow or red and the dominant color is a more conservative one, such as black or blue. Metalflake colors are often the key to fishing success.
# In choosing worm colors, stick to a color that seems to work in your area, but don't be afraid to experiment. Most professionals use shades of purple.