Where can I change the background color of an individual gallery

abstrkt

I am new to SmugMug and I currently try to set up my site. I have managed to create some galleries in two folders which appear on the homepage. I have tried to set up the background color of my galleries in Customize - Content and design - All Galleries - Theme. Although I have chosen a theme with a white background, two of my four galleries have a black background and I don't know how to change this. Also the "breadcrump" is missing. Can somebody help?

bilderwelten.smugmug.com

denisegoldberg

In the problem gallery you have the property Hide Owner set to ON. Change that setting to OFF. The hide owner setting is on the SECURITY & SHARING tab of the gallery settings.

From the help page Hide account owner information for a gallery:

Hide Owner will remove the nickname from your URL and make it completely SmugMug.
Your custom Banner will be replaced with the SmugMug banner. This will also remove all customization on the page.
Links to your homepage won't appear, only the gallery name will.