MarsSeed [1] filed a deletion request for darkcold-xfce-theme [2]: Broken, unused EOL Gtk2 based theme from 2012. Not compatible with the current Gtk3 based Xfce4. Also source is unavailable.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/darkcold-xfce-theme/
