Yes, I have looked. I was just thinking that it would be nice to have a right click menu to add an image to background ect... I have already messed with the "site.master" and replaced <uc1:footer ID="Footer1" runat="server" /> with <!--#include file="../footer.aspx"--> which works good at adding my own footer to the site. I'm sure there are probably some future plans of adding a theme option to the software but I was just wishing for a right click menu for any images in the gallery, then you could have a special folder dedicated to backgrounds, headers, and footers. I'll keep tinkering around and possibly figure it out.
Thanks for the suggestion on the App_Themes folder.