There may be more than this, but the following pages have the Koha logo and search bar at the top with a white background instead of the blue that's on most pages: /cgi-bin/koha/admin/preferences.pl /cgi-bin/koha/circ/returns.pl I'm in Firefox on Mac.
patch for 7998 contains code to fix this. *** This bug has been marked as a duplicate of bug 7998 ***