A few months ago gnome-prism was shared here and on Reddit: the GNOME theme from the Framework 13 Pro marketing, made by Zach Feldman from Framework as an unofficial personal side project.
I wanted the same theme outside GNOME. My setup is a tiling window manager environment on Arch (Mango, foot, Neovim, lf, fuzzel, mako, rmpc, and others, on a Framework 13), so I ported the palette and its conventions across the whole stack: terminal palette, per-program colour files, GTK3/GTK4 css, Firefox, and Neovim. The result is published as a reference repo, with the design decisions documented (including a couple of departures from upstream, explained in the README):
If anyone ports it further, to other programs or environments, the palette file and conventions section should give you most of what’s needed.