gtk-theme-Blackbird: gtk-theme-Blackbird (Dark Desktop Suite for Xfce) gtk-theme-Blackbird: gtk-theme-Blackbird: Blackbird is a Dark Desktop Suite for Xfce. gtk-theme-Blackbird: gtk-theme-Blackbird: Home page: https://github.com/shimmerproject/Blackbird/ gtk-theme-Blackbird: gtk-theme-Blackbird: gtk-theme-Blackbird: gtk-theme-Blackbird: gtk-theme-Blackbird: gtk-theme-Blackbird: