How to style Menu or MenuBar component

I can’t see any “style” property on those, neither I can see MenuStyle component. How do we style those ? What about StatusBar component ? I see a StatusBarStyle component : http://qt-project.org/doc/qt-5/qml-qtquick-controls-styles-statusbarstyle.html but no “style” property in StatusBar documentation : http://qt-project.org/doc/qt-5/qml-qtquick-controls-statusbar.html