Comment 2 for bug 1469908

Some relevant code to change for Switchboard is here: https://bazaar.launchpad.net/~elementary-pantheon/switchboard/switchboard/view/head:/src/CategoryView.vala#L255

Introducing Gtk.Image here would most likely add the benefit of third-party plugs installing their custom icons correctly. As of yet, Switchboard doesn't recognize icons installed to /usr/share/icons/hicolor (which is the proper location for custom icons) and third-party plugs have to install to /usr/share/icons/elementary. Which they really shouldn't because they're not part of the elementary-icons package.

Is this worth an additional bug attached to Switchboard?