polkit.addRule(function(action, subject) {
   if (action.id == "org.freedesktop.color-manager.create-device" ||
        action.id == "org.freedesktop.color-manager.create-profile" ||
        action.id == "org.freedesktop.color-manager.delete-device" ||
        action.id == "org.freedesktop.color-manager.delete-profile" ||
        action.id == "org.freedesktop.color-manager.modify-device" ||
        action.id == "org.freedesktop.color-manager.modify-profile") {
      return polkit.Result.NO;
   }
});

polkit.addRule(function(action, subject) {
   if (action.id == "org.freedesktop.packagekit.system-network-proxy-configure" ||
       action.id == "org.freedesktop.packagekit.system-sources-refresh") {
      return polkit.Result.NO;
   }
});