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Can you add custom theme to modern team site?
By default, a “modern” team site has scripting capabilities turned off. You can still apply a custom theme, but you cannot introduce a custom theme to the theme gallery as an option for end users.
SharePoint site theming 1 Default themes. These themes have been designed for readability, so you might find them to be useful starting points for creating custom themes. 2 Select a modern theme. 3 Work with classic themes. 4 Troubleshoot custom theme issues.
For more information about default themes, see SharePoint site theming: JSON schema. In addition to the default themes, you can select from supplementary themes. The following customizations are available: Light themes: Gold, Teal, Dark Blue, Indigo, Plum, Warm Gray. Dark themes: Red, Green, Purple, Gray.
How to customize default site design in SharePoint?
For example, you can ensure that your company theme is applied to every site that gets created, or you can make sure a logging mechanism always runs regardless of which site design is chosen. To customize the default site designs, apply a new one with the PowerShell Add-SPOSiteDesign cmdlet or the CreateSiteDesign REST API.
Can a custom theme be added to the theme Gallery?
You can still apply a custom theme, but you cannot introduce a custom theme to the theme gallery as an option for end users. If you want to add a theme to the theme gallery, you need to enable scripting on the site.
Themes are defined in a JSON schema that stores color settings and related metadata for each theme. An online Theme Generator tool that you can use to define new custom themes. A simplified set of default themes, with six light themes and two dark themes presently available.