MarsSeed [1] filed a deletion request for ater-xfwm-theme [2]: EOL Gtk2 based Xfwm4 theme from 2008. Not compatible with the current, Gtk3 based xfwm4.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ater-xfwm-theme/
