If you have Wormhole and LieroKit v1.5, both downloadable from the Liero Hellhole, you can use several different palettes from the ones you can download. Open LieroKit, go to your Liero directory, and there should be a directory named "Palettes." Enter it, and there should be some palettes that can be activated inside. These palettes do not include all of the colors, so they will make Liero look strange when activated.