Attention! You need to use with Forge the OptiFine mod for it to make it working!
This resource pack is about the white enderman, which is rare, but not so much. Of course then you have chance to meet one of them in overworld, but bigger chance in the End. The resource pack is for 3 versions in the same time, for 1.11(.1, 2), for 1.12(.1, 2) and for 1.14(.1, 2, 3, 4). The black endermen's eyes look like than in my Little Changes resource pack. Their eyes have the same color than the Ender pearl. This is because the pearls are their eyes. And then the white enderman's eyes the same, just a bit dfifferent, what you can see on the screenshots and in the game, if you will use this resource pack. Click here, if you want to check and/or try out my Little Changes resource pack too.
Of course you can see some screenshots about the changes in the Images.
If you doesn't know how to add to the Minecraft a resource pack, i help you in that. After you downloaded the ZIP file to your Minecraft version, don't extract it, or it won't work. Copy the ZIP file in your Minecraft folder to the resourcepacks folder. After that run the Minecraft, go to the Settings, choose the Resource Packs and there add it to the Minecraft, wait a bit, after it's done. If you did it well, it should be working.
Here is a mod for which the mod's creator added as a little extra (i asked him) the brown mooshrooms for 1.12.2, 1.11.2, 1.7.10 and other older versions too, click here to check it! In that mod the brown mooshrooms can be breed with red mooshrooms well, not like in the Brown Mooshrooms mod, where it's sadly impossible.