diff --git a/src/calibre/web/feeds/news.py b/src/calibre/web/feeds/news.py
index 9ba9583c73..a140dfbf05 100644
--- a/src/calibre/web/feeds/news.py
+++ b/src/calibre/web/feeds/news.py
@@ -290,10 +290,12 @@ class BasicNewsRecipe(Recipe):
     #: the cover for the periodical.  Overriding this in your recipe instructs
     #: calibre to render the downloaded cover into a frame whose width and height
     #: are expressed as a percentage of the downloaded cover.
-    #: cover_margins = (10,15,'white') pads the cover with a white margin
+    #: cover_margins = (10, 15, '#ffffff') pads the cover with a white margin
     #: 10px on the left and right, 15px on the top and bottom.
-    #: Colors name defined at http://www.imagemagick.org/script/color.php
-    cover_margins = (0,0,'white')
+    #: Color names defined at http://www.imagemagick.org/script/color.php
+    #: Note that for some reason, white does not always work on windows. Use
+    #: #ffffff instead
+    cover_margins = (0, 0, '#ffffff')
 
     #: Set to a non empty string to disable this recipe
     #: The string will be used as the disabled message