diff --git a/sigal/settings.py b/sigal/settings.py
index 3ba10a8..26f1374 100644
--- a/sigal/settings.py
+++ b/sigal/settings.py
@@ -38,7 +38,7 @@ _DEFAULT_CONFIG = {
     'exif': '0',
     'copyright': '',
     'ext_list': '.jpg,.jpeg,.JPG,.JPEG,.png',
-    'theme': 'default'
+    'theme': 'colorbox'
 }
 
 
diff --git a/tests/sample/sigal.conf b/tests/sample/sigal.conf
index 3a6d11a..14c6a3c 100644
--- a/tests/sample/sigal.conf
+++ b/tests/sample/sigal.conf
@@ -5,8 +5,8 @@
 # example config file
 
 # theme :
-# - default, galleria, or the path to a custom theme directory
-# theme = default
+# - colorbox (default), galleria, or the path to a custom theme directory
+# theme = colorbox
 
 # size of resized image
 # img_size = 640x480