This file is indexed.

/usr/share/themes/Adwaita/gtk-3.0/ is in gnome-themes-standard-data 3.22.3-3ubuntu2.

This file is owned by root:root, with mode 0o755.

File Mime Type Owner Mode Size
..
/usr/share/themes/Adwaita/gtk-3.0/gtk.css text/plain root:root 0o644 68 bytes