Since I'm typically spending my time in filming, often times I have need of green screen techniques, but I can tire of placing down blocks and using a texture pack. So, I have created mostly for myself a green screen sky for green screen needs, and now I'm sharing it with you! It should help make some of your green screening needs a little easier!
So, enjoy the sky!
Note: Requires Optifine! Also, recent changes in Optifine break older versions of custom skies. I have added the universal pack which will work with "ANY" version of Optifine.