This is themes that are sourced for kali undercover-mode and the source
states that it does work on GNOME as well as XFCE. I have yet to test it
on GNOME but if it does work I could assume "camouflage" mode that was
in previous older versions of tails could be reintroduced as feature to
turn on in the tails startup screen.
https://github.com/B00merang-Project/Windows-10