Binary package “gtk-chtheme” in ubuntu trusty

GTK+ 2.0 theme changer and previewer utility

 'Gtk Theme Switch' based utility that aims to make themes previews and
 selections as slick as possible. Themes installed on the system are
 presented for selection and previewed on the fly.
 .
 This utility was develop only to work for GTK+ 2.x themes. For GTK+ 1.x themes
 use 'gtk-theme-switch' package