Aluzion's Transparent Dark GUI Overlay

Summary:
This adds a transparent GUI overlay to your game.

Features:
- I made this for people who PVP with my texture pack: Aluzion [​PVP] 1.8.9 Minecraft Texture Pack (planetminecraft.com)
- It features all the original GUI textures from my pack

What are you allowed to do with this overlay?
- You are allowed to take screenshots and videos.
- You are allowed to modify it as long as you do not distribute it.
- You are not allowed to distribute it in your own name.

- Please give credit if you use it in a video!

Please feel free to post ideas for tweaks and if you notice any bugs!