/usr/share/ is in compass-blend-modes-plugin 0.0.3+20150331~dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/compass/
/usr/share/compass/frameworks/
/usr/share/compass/frameworks/blend-modes/
/usr/share/compass/frameworks/blend-modes/stylesheets/
/usr/share/compass/frameworks/blend-modes/stylesheets/_blend-modes.scss
/usr/share/compass/frameworks/blend-modes/templates/
/usr/share/compass/frameworks/blend-modes/templates/project/
/usr/share/compass/frameworks/blend-modes/templates/project/manifest.rb
/usr/share/compass/frameworks/blend-modes/templates/project/screen.scss
/usr/share/doc/
/usr/share/doc/compass-blend-modes-plugin/
/usr/share/doc/compass-blend-modes-plugin/README.md.gz
/usr/share/doc/compass-blend-modes-plugin/buildinfo_all.gz
/usr/share/doc/compass-blend-modes-plugin/changelog.Debian.gz
/usr/share/doc/compass-blend-modes-plugin/copyright
/usr/share/doc/compass-blend-modes-plugin/examples/
/usr/share/doc/compass-blend-modes-plugin/examples/config.rb
/usr/share/doc/compass-blend-modes-plugin/examples/i/
/usr/share/doc/compass-blend-modes-plugin/examples/index.html
/usr/share/doc/compass-blend-modes-plugin/examples/js/
/usr/share/doc/compass-blend-modes-plugin/examples/js/blend-modes.js
/usr/share/doc/compass-blend-modes-plugin/examples/scss/
/usr/share/doc/compass-blend-modes-plugin/examples/scss/styles.scss
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/compass-blend-modes-0.0.3.gemspec