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And the result... All the backgrounds go red:

If desired, you can set all the settings back to default (ie. make everything in your layout inherit from its parent layout) using the "Revert" button on the Toolbar.

Inherit Settings

This is discussed elsewhere, but let's just recap here to avoid confusion...

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• Layout Manager - the part of Theme Builder where these settings are found
• Available Layouts - more information on how you can interact with the "Available Layouts" panel including it's toolbar and also some neat drag-and-drop features