Hi all.   After reading about Ai4rei's little discovery I decided to try and make a client plugin.   This plugin gives you a new config file, mapeffecttable.txt, which allows you to set weather effects and modify 3D renderer clear color ("sky color") for maps. Now you can add clouds and blue sky (like in Juno and Kunlun) to any map without modifying the client or having to replace the effect from an old map.   I just made this today and haven't tested very much, so there will likely be bug