VisualEditor does not currently support the Metrolook skin (https://www.mediawiki.org/wiki/Skin:Metrolook). It would be nice if that could be integrated.
By "does not currently support" I mean that after setting $wgVisualEditorSupportedSkins to Metrolook, the default skin to Metrolook and enabling VisualEditor on a wiki, it does not work (i.e. there is no VisualEditor option when trying to edit a page).
Version: REL1_28 (1.28.2)