The Underwear A Neutral recolor mod will let you change the color of your undergarments. The textures of the undergarments are also changed, and if you use the mod, you will notice that certain armors have a different color and texture than the ones you are used to.

It is recommended to install this mod in your game through a utility called Monster Hunter World.

Installation:

Go to the game directory (usually C:\Program Files (x86)\Steam\steamapps\common\Monster Hunter\nativePC),

Select the file you want to install,

You can now play with the textures.