An extension for Ttk/Tile that uses the GTK GUI toolkit.
See: http://www.ellogon.org/petasis/index.php?option=com_content&task=view&id=29&Itemid=45
NEM To use this extension, download and install the package for your system from the link above. Then you simply need to require the package and instruct ttk to use this theme:
package require ttk::theme::tilegtk 0.2 ttk::style theme use tilegtk # Then code Ttk GUI as usual, and the GTK widgets will be used: pack [ttk::button .b -text "Hello!" -command exit]