TF2 Polishing Project Phase 1: Gray MvM assets

As you can read from the title, these are Gray Mvm assets. You may be thinking about FissionMetroid's version and be wondering why I'm posting this. Well, I decided to make my own for the TF2 Polishing Project. This is one also makes almost everything Gray.

Changelist: *All Robots have been changed to the color Grey. *Romevision models have been made Grey. *Any team colored weapons the robots may hold are now properly Grey. *Engineer Buildings have been made Grey. *HUD Icons have been made Grey. (Character portraits remain the same.)

This mod DOES NOT have Grey particles or Gry uber just yet. Fission said I could take a few things from his pack, such as the new Robot Hologram, Romevision models and improved particles.

If you would like to know more about the TF2 Polishing Project, please look at the thread on Facepunch: https://facepunch.com/showthread.php?t=1475291

NOTE: The Grey sentries and Weapons are considered to be edited Blu textures, so using it on a sv_pure 0 server that isn't MvM will result in Grey things on Blu team. If you see any Blu things that I missed, tell me in the comments.