have added a config for the homogeneous property to terminator, so u can set homogeneous to False in the config file to to this I added a line to config.py and changed a line in notebook.py

terminatorlib/config.py

@@ -86,6 +86,7 @@ DEFAULTS = {
             'close_button_on_tab'   : True,
             'hide_tabbar'           : False,
             'scroll_tabbar'         : False,
+            'homogeneous_tabbar'    : True,
             'hide_from_taskbar'     : False,
             'always_on_top'         : False,
             'hide_on_lose_focus'    : False,

terminatorlib/notebook.py

@@ -45,7 +45,7 @@ class Notebook(Container, gtk.Notebook):
         # the new order of terminals. We probably need to preserve this for
         # navigation to next/prev terminals.
         #self.connect('page-reordered', self.on_page_reordered)
-        self.set_property('homogeneous', True)
+        self.set_property('homogeneous', self.config['homogeneous_tabbar'])
         self.set_scrollable(self.config['scroll_tabbar'])
 
         if self.config['tab_position'] == 'hidden' or self.config['hide_tabbar']: