/usr/share/ is in shiki-noble-theme 4.6-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/backgrounds/
/usr/share/backgrounds/Arc-Noble.png
/usr/share/themes/
/usr/share/themes/Shiki-Noble/
/usr/share/themes/Shiki-Noble/index.theme
/usr/share/themes/Shiki-Noble/gtk-2.0/
/usr/share/themes/Shiki-Noble/gtk-2.0/panel.rc
/usr/share/themes/Shiki-Noble/gtk-2.0/gtkrc
/usr/share/themes/Shiki-Noble/gtk-2.0/Panels/
/usr/share/themes/Shiki-Noble/gtk-2.0/Panels/panel-bg-dark.png
/usr/share/gnome-background-properties/
/usr/share/gnome-background-properties/arc-noble.xml
/usr/share/doc/
/usr/share/doc/shiki-noble-theme/
/usr/share/doc/shiki-noble-theme/copyright
/usr/share/doc/shiki-noble-theme/README
/usr/share/doc/shiki-noble-theme/AUTHORS
/usr/share/doc/shiki-noble-theme/changelog.Debian.gz