I'm seeing the following in the developer console (latest version of Chrome):
- GET https://www.blackorchidcouture.com/favicon.ico 404 (Not Found)
- ... requested an insecure script 'http://www.blackorchidcouture.com/store/includes/winchester_black/jscript/jquery.carouFredSel-6.0.2.js'. This request has been blocked; ...
The first item indicates their is no favorite icon "favicon.ico" on your website. Did you place this file in the correct location ("/favicon.ico")? Or did you place it somewhere else (such as "/store/favicon.ico"; would require doing something similiar to what lat9 suggested)?
The second item is probably the actual cause of the insecure / mixed content warning. A similiar warning is shown by Firefox and Internet Explorer.