https://wordpress.org/plugins/inherit-theme-mods/

WordPress plugin 'Inherit Theme Mods' enable to copy child theme properties from those of parent. You can see details on official plugin directory.

GPLv2 or later

License URI: http://www.gnu.org/licenses/gpl-2.0.html

• you can see 'Inherit Theme Mods' in 'settigns' menu

• inherit or overwrite parental property to that of child.

• You can use 'Inherit Theme Mods' as simple inspector for theme properties.