Holugar on his userpage has changed the permissions for his Unicorn file for oldrim in August 2016 to:
"Holugar changed permissions for Unicorn: users can now upload this file to other sites; users can modify this file; users can use assets from this file with or without permission"
As quoted from here: https://www.nexusmods.com/skyrim/users/4126226/?
I don't really care what you do with this here pink recolor, I prefer you not to stick it on other sites but otherwise its a little tiny texture edit that takes about 30 seconds in gimp.
File credits
Holugar for the original oldrim mod, textures, meshes, assets et.al. Guitardz for porting his mod to SSE Bethesda for giving us Skyrim
Donation Points system
This mod is not opted-in to receive Donation Points
Salmon pink recolor of Unicorn SE. Uploaded by request.
This is a REPLACEMENT of the original white unicorn body texture. You NEED Unicorn SE to make this work.
I have no idea if this works in Oldrim, it should because this is just a basic recolor; but, use in oldrim at your own risk/discretion. I am not responsible for anything happening to your oldrim unicorn.
CREDITS
Holugar for the original oldrim mod, textures, meshes, assets et.al. Guitardz for porting his mod to SSE Bethesda for giving us Skyrim