Importing layout themes
You can import themes from other FileMaker Pro files.
Note  To import themes, you must have full layout access privileges to both the source and destination files. For more information, see Editing record access privileges and Editing layouts privileges.
To import a theme:
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Choose File menu > Manage > Themes.
Tip  In Layout mode, you can also choose Layouts menu > Change Theme > Import Themes.
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The imported themes appear in the Manage Themes dialog box in the order they were imported.
7.
Click OK to close the Manage Themes dialog box.
When you import a theme, FileMaker Pro logs an entry in an import.log file located in the same folder as the database. Double-click the log file to view log entries.
Related topics 
Renaming a layout theme
Saving a layout theme
Managing layout themes