Comment 16 for bug 772212

There is also two sets of icons in thems Ambiance and Radiance: Metacity and Unity; the first for unmaximized windows and the latter for maximized oenes. It seems “Unity” buttons layout is unchangable.
There is a settings for Unity (here)[http://askubuntu.com/questions/174292/how-can-i-move-all-the-window-controls-to-the-right] in jokerdino’s answer, but that Gnome Shell schema doesn’t exist in 13.04 – please try in 12.10 and 12.04.