I said I shouldn’t, and I meant it - but my self-control is about as liable to crumble as a Cucco is to rain fire upon their enemies.  The first image is the GameCube version of Twilight Princess with the game’s vanilla textures, running in Dolphin at 1080p - and the second is that same scene with TPHD’s textures ported over. See the GIF for a clearer comparison.

It seems silly to port higher-res textures into a game that is now over 13 years old (especially when I can just emulate the Wii U version, which is how I was able to access those textures in the first place), but Dolphin (GameCube emulator) has so many features that Cemu (Wii U emulator) currently doesn’t, the most friendly of which being the free-moving camera, which is how I was able to nab these screenshots in the first place.  Seeing these images side-by-side really draws attention to how much more crisp the Wii U textures are in comparison; take the veins on Ganondorf’s neck, for instance.  You can also see that they tried to make the game a tad more colorful the second time around.

Can I make it brown?

The answer is yes.  Yes, I absolutely can.

As of now I’ve only touched up the textures on Link’s Ordonian garb, and I imagine this would need to be done for all of his outfits--though that should hardly be difficult.  I don’t know that there are enough people out there who both a) are still playing Twilight Princess in 2019 and b) would use such a thing in the first place to warrant creating a completed pack for general use, but I’ve enough of a vested interest in it that I plan on finishing it regardless.