These Spinnerbaits (Colorado blade) have a loud vibration that helps bass key into the bait with their lateral lines and is very effective in muddy water. Also, these Spinnerbaits are perfect for fishing slow because the blade keeps spinning at a low rate of speed and will not tip over. This spinnerbait is specifically designed to imitate a gizzard shad. This color is the closest thing that you can get to a gizzard shad without actually using live bait.