cp -rf /etc/skel/. ~/
And reboot
Edit: Update on new features introduced in Garuda Assistant.
Using the above cp command is no longer necessary as it will overwrite all default configs in the users home directory. Some time after this thread was created Garuda Assistant was updated to allow a much more fine grained solution. Garuda Assistant now allows the user to choose exactly which system components they wish to revert to the defaults. That way if you only require your Latte config to be reverted it doesn't revert other components you may have spent a lot of time and effort customizing.
It is now recommended to simply use Garuda Assistant to revert individual user configs.