color: reflect the new default in the example hgrc

Color is enabled by default so un-commenting the line would not have any effect.
We'll point to the help in the next changeset.

mercurial/ui.py

@@ -51,8 +51,8 b' samplehgrcs = {'
 # username = Jane Doe <[e-mail]>
 username =
 
-# uncomment to colorize command output
-# color = auto
+# uncomment to disable color in command output
+# color = never
 
 [extensions]
 # uncomment these lines to enable some popular extensions
@@ -97,8 +97,8 b' default = %s'
 """# example system-wide hg config (see 'hg help config' for more info)
 
 [ui]
-# uncomment to colorize command output
-# color = auto
+# uncomment to disable color in command output
+# color = never
 
 [extensions]
 # uncomment these lines to enable some popular extensions