I love this one! I was thinking about migrating to Arch but it's too much work right now. ~~I wonder if the colors can be tuned to even more red...~~ Managed to modify the theme by using Marble's script, so now is more in line with the wallpaper
Icon pack: Papirus Dark https://www.gnome-look.org/p/1166289/
Shell theme: Marble Dark Custom Accent https://www.gnome-look.org/p/1977647/
Wallpaper: https://www.reddit.com/r/armoredcore/comments/16qk8k0/armored_core_vi_is_art/
Is part of the marble dark theme. I tweaked the color by using the script they provide to change the accent color to something more in line with the wallpaper. You can also use other colors! Give it a try and let me know if it works