hgext/color.py

--- a/hgext/color.py	Thu Nov 03 05:12:23 2016 +0100
+++ b/hgext/color.py	Thu Nov 03 14:12:32 2016 +0100
@@ -538,6 +538,7 @@
 
 @command('debugcolor', [], 'hg debugcolor')
 def debugcolor(ui, repo, **opts):
+    """show available colors and effects"""
     global _styles
     _styles = {}
     for effect in _effects.keys():