#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'))