What does this do?
It gives you access to every eye combination that exists in the game for your character. Further you can choose to make your eyes GLOW using one of 14 options (2 from game and 12 made by me.) The glow color can be changed IN GAME.
In total:
Base: 20 options
Mask (Emission): 16 (2 are no glow) options
Normal: 3 options
So you have 960 unique combinations. Not including the near infinite glow color you can achieve.
It works out of the box for every player and npc in the game. (I have a toggle for "Players Only" and "Everyone")
Q&A:
Q: I'm not seeing anything when I change options?
A: Make sure this Mod has like a priority of 10 or something. You don't want anything else overwriting it.
Q: How do I prevent this from applying to every other player?
A: Create a Penumbra collection that is only for you, if you are familiar with Mare you have already done this.
Q: How do I change the glow color?
A: Follow this written guide along with the corresponding image and gif demo. I promise it looks scary but you will learn fast~

Everything I produce is open source and free use. If you appreciate my work you can donate to my kofi, but are in no way obliged to do so.
Credits:
ESRGAN (xintiao et al.)/GAN:
Nickelback: BlackScout
Scalenx: LyonHrt
Normal RG0 series: RunDevelopment
BC1 Smooth 2: BlueAmulet