We have a fresh install of 4.5.6 NE. Everything is working well, but I have a question about rebranding. I read the entire PDF under documents and implemented the changes. The problem is that when users first visit the Zimbra login page (or after clearing cookies), Zimbra does not use our default customized skin for the default COS (we only have one COS). We only have one email domain and one COS. Our custom skin comes up after they login, but it always defaults to the sand theme for initial logins or after users have cleared their cache and cookies. Please note I am not talking about logos, but about the actual skin. I searched extensively, but only found a little information. Can someone please help with this? Thank you.