#6528 None, True, False are keywords in 3.x. Patch by Roger Serwy.
diff --git a/Lib/idlelib/configDialog.py b/Lib/idlelib/configDialog.py
index 6482119..d09fb5e 100644
--- a/Lib/idlelib/configDialog.py
+++ b/Lib/idlelib/configDialog.py
@@ -199,7 +199,7 @@
             ("'string'",'string'),('\n  var1 = ','normal'),("'selected'",'hilite'),
             ('\n  var2 = ','normal'),("'found'",'hit'),
             ('\n  var3 = ','normal'),('list', 'builtin'), ('(','normal'),
-            ('None', 'builtin'),(')\n\n','normal'),
+            ('None', 'keyword'),(')\n\n','normal'),
             (' error ','error'),(' ','normal'),('cursor |','cursor'),
             ('\n ','normal'),('shell','console'),(' ','normal'),('stdout','stdout'),
             (' ','normal'),('stderr','stderr'),('\n','normal'))