More theme changes:

src/platform/theme/resources/gtkrc

 gtk_color_scheme = "fg_color:#000\nbg_color:#F7F7F7\nbase_color:#F7F7F7\ntext_color:#000\nselected_bg_color:#000\nselected_fg_color:#000\ntooltip_bg_color:#F7F7F7\ntooltip_fg_color:#000\n"
 
 gtk-font-name="DroidSans 7"
 
+# Disable button images.
+gtk-button-images = 0
+
+# Diable mnemonics for labels and menu items.
+gtk-enable-mnemonics = 0
+
 style "default" {
   fg[NORMAL]        = @fg_color
   fg[PRELIGHT]      = @text_color
   fg[SELECTED]      = @selected_fg_color
   fg[ACTIVE]        = @fg_color
   # Disabled text color for buttons.
   fg[INSENSITIVE]   = "#808080"
 
   bg[NORMAL]        = @bg_color
   bg[PRELIGHT]      = @bg_color
@@ skipping 61 matching lines @@
   # border.
   xthickness = 1
   ythickness = 1
 
   # This gives an extra border around each tab (notebook page) so that we can
   # draw the border in. We have to do this as we set the x/ythickness to 1.
   GtkNotebook::focus-line-width = 1
 
   # We don't want tabs to overlap.
   GtkNotebook::tab_overlap = 0
+
+  # Padding for tabs.
+  GtkNotebook::tab-curvature = 10
 }
 
 style "TextStyle" = "default" {
   base[SELECTED]      = "#DCE4FA"
 }
 
 style "TooltipStyle" = "default" {
   # Padding to allow a rounded rect border.
   xthickness = 10
 
   # Padding to give more space at top and bottom.
   ythickness = 6
 
   # Yellowish background.
   bg[NORMAL] = "#FFF9E3"
 
   # Give tooltips a slightly smaller font.
   font_name = "DroidSans 6"
 }
 
 class "*" style "default"
 
 class "GtkNotebook" style "NotebookStyle"
 
 class "GtkEntry" style "TextStyle"
 
 class "GtkTextView" style "TextStyle"
 
 widget "gtk-tooltip*" style "TooltipStyle"