AmazingHorse is a cosmetic plugin : any player with the correct permission will transform any block this horse walks on into colored wool. But don't worry about your map, this plugin does not modify the world.
In order for this plugin to work, since there are no commands, the player needs to have the permission amazinghorse.rainbow
You need ProtocolLib to make this plugin work. Just put ProtocolLib.jar in your plugins folder.
