Green Screens are used for techniques video installation called chroma keying
. Green color well allows the editor to more easily change backgrounds cropping, adding another layer for him. Despite the fact that this is the most common feature for a video production (e.g. to add special effects), it can also be used to edit photos.
This textures package includes three green screens: green, red and blue. Use a block of glowstone to create your own green screen in the game. Install Green Screen global resources / textures: Download texture.
In the directory "games/com.mojang/" create a folder "resource_packs".
Then remove the texture from the archive, and move only the folder from the archive to the folder "resource_packs".
Go to settings MCPE, and then in the management of the textures.
Select your texture.
Enjoy the game!