I've added the following to my gtkrc file(which i've downloaded from art.gnome.org)style "titlebar" = "flat"{ # Normal base color bg[NORMAL] = "#bbbbbb" # Unfocused title background color bg[INSENSITIVE] = { 0.8, 0.8, 0.8 } # Unfocused title text color fg[INSENSITIVE] = { 1.55, 1.55, 1.55 } # Focused icon color fg[NORMAL] = { 0.2, 0.2, 0.2 } # Focused title background color bg[SELECTED] = "#4A4A4A" # Focused title text color fg[SELECTED] = "#F9F9F9"}widget "title_bar" style "titlebar"And I put this in my python code:MenuBar.set_name("title_bar")