Redmond97-SE is a living continuation of the now unmaintained Redmond 97.
“Redmond” style themes for GTK, Xfce, Metacity, WINE.
Includes both old-school retro variants to emulate Win9x/2000/XP, plus more modern darks for the productivity-focused desktop.
AUR packaging for Arch Linux just dropped.
I’m not the actual theme maintainer but I’m sure they would be receptive of PRs.
I guess the easiest would be using Kvantum to port the existing GTK theme if anyone is up for it.
https://github.com/tsujan/Kvantum/
https://raw.githubusercontent.com/tsujan/Kvantum/refs/heads/master/Kvantum/doc/Theme-Making.pdf