temporariry change gtk-2 theme to test xfwm theme.
Import Default-4.6 xfwm4 theme
xfwm4: complete theming of "close" button.
xfwm4: now icon PNGs provide only highlight. They can be shared all kinds of buttons.
xfwm4: Completed "hide" button.
xfwm4: "prelight" icon xpms are identical to "active" icon xpms.
xfwm4: complete "maximize" button.
xfwm4: complete "maximize-toggled" icon.
xfwm4: complete "menu" button (we don't have menu button, though)
xfwm4: complete "shade" button.
xfwm4: complete "shade-toggled" button.
xfwm4: complete "stick" button.
xfwm4: complete "stick-toggled" button.
xfwm4/themerc: remove active_text_color so that it is set by Gtk theme.
xfwm4: little modification to "close" button for visual clarity.
gtk-2: set titlebar style properly.
Update doc.
gtk-3: update settings.ini to match with gtk.css