For complete control, administrators can manage all Scroll Viewport themes within Confluence in one place.

You need Confluence administrator permissions to manage all Scroll Viewport themes.

To manage themes on the theme management screen, choose Confluence Administration > Scroll Viewport > Themes:

There are few different things you can do from the Actions column:

Action

Description

DownloadDownload the theme as a theme app JAR file for backup or sharing
EditEdit the theme
DeleteDelete the theme
CopyMake a copy of the theme

Permissions 

By default, only Confluence administrator can fully manage Viewport themes. While Space administrator can copy and pick a theme for their space, by default they can only customize theme settings and upload image files for a theme that is based on the Help Center Theme.

Confluence administrator can extend theme editing permissions of space admins and other users.