Rainbow Tings? How about rainbow Pricklys? You can make each instakill you separately, so red is no longer exclusive to that. The red glow tells you which instakill you. Big pricklys, bouncers, swings etc can all change colours.
Each world will include many new set pieces and tiles. Huge thanks go to a legendary custom tileset creator 92Dexter11 for allowing me to include their work in ReDesigner!
