Add setting up oxygen-mozilla-plugin

client-profiles/60-default-desktop/.mozilla/firefox/calculate.default/prefs.js

@@ -18,4 +18,6 @@ user_pref("browser.tabs.warnOnClose", false);
 user_pref("extensions.adblockplus.showinstatusbar", true);
 user_pref("extensions.adblockplus.showintoolbar", false);
 #pkg#
-
+#?pkg(oxygen-mozilla-plugin)!=#
+user_pref("general.skins.selectedSkin", "oxygen");
+#pkg#