Subrace Fix Version
Apparently the accessories on the "Umberlee" hair turn particular colors on different subraces/bodies. Toarie was kind enough to explain that this is due to entries in the CharacterVisuals _merged file. Specifically, the "Color_02" parameter.

So basically, I set the "Enabled" line to "False" for "Color_02" on the following entries:

• Half High Elf (female + female strong)
• Half Drow (female + female strong)
• Forest Gnome (female + male)
• Deep Gnome (female + male)
• Shield Dwarf (female + male)
• Strongheart Halfling (female)
• Lightfoot Halfling (female + male)
  

If you have Unique Tav (minimum version 1.5.0) and/or Eyes of the Beholder (minimum version 2.8), then you do not need the Subrace Fix file version! Kartoffels and Labotor were kind enough to disable Color_02 in the appropriate entries in their mods so that I wouldn't have to make patches of them. <3

Silver Version

Unlike the Subrace Fix version, this changes the material entry of the Umberlee accessory so that Color_02 is not enabled (rather than editing player subrace entries). While this means that it is compatible with UT and EotB, it also means that anything which uses that specific material will also be impacted. As far as I can tell, the only things that use the material are
1) Allandra Grey and Shar's hairstyles (however, Allandra's hair accessories are already set to be silver so it
2) Shadowheart's underwear
3) The necklace on Shadowheart's Sharran epilogue outfit (which is already set to be silver as well)
So I personally believe that it's an easy trade-off. If you would rather those things not be impacted, however, I will keep the old silver version (which edits the player subrace entries) available to download, just note the three subraces that it doesn't work on (I never did figure out how to fix that).

Install the pak version like any other pak (drop it in your mods folder or import it in your mod manager).

Should be able to safely uninstall at any time since it doesn't add or remove anything, just changes color.

Other mods seen in images:

• Tav's Hair Salon
• More Hairs (Full Release)
• Kay's Hair Mod + Kay's Hair Extensions
  

Thanks
Toarie for explaining what to change because I was getting absolutely nowhere with it before I asked her <3
ShinyHobo for the BG3 Modder's Multitool
Norbyte for the ExportTool (aka lslib)
The Down By The River discord server for being awesome & full of resources that allowed to to start making mods in the first place (and for being so supportive and fun to hang around in).