krakn [1] filed a deletion request for gnome-shell-theme-black [2]:
Unable to locate this theme upstream.
[1] https://aur.archlinux.org/account/krakn/ [2] https://aur.archlinux.org/pkgbase/gnome-shell-theme-black/
Request #8179 has been accepted by ArchangeGabriel [1].
aur-requests@lists.archlinux.org