How to Update the Default Site Theme Alicia B. Updated October 10, 2016 17:54 Follow Go to Site Admin > Site Settings > Site Appearance. Scroll to the Site Theme section of the page. Select the desired Site Theme. Continue editing your site appearance OR click Update to review your changes to the Site Theme. Related articles Photo Galleries - Wide: Add Photo Custom Content Module - Intro Comments 0 comments Please sign in to leave a comment.