Colorful output from bzr grep plugin

bzr-grep-with-colors.diff

=== modified file '__init__.py'
--- __init__.py	2008-01-20 20:07:02 +0000
+++ __init__.py	2010-08-04 04:51:49 +0000
@@ -141,11 +141,11 @@
         #   bzr grep foo -- -i file
         # and pass the -i through to grep.
 
+        files = []
+        options = [u'--color=always']
+
         if list is None:
-            return [], []
-
-        files = []
-        options = []
+            return options, files
 
         while len(list) > 0:
             item = list.pop(0)