Do all the email templates change when you install Email customizer?

Hello:

I only need to change new order email that goes to admin.
When I install this plugin, does that mean that all the email templates change from their default Woo email templates (purple colour etc.) to default Email template customizer templates?

After installing Email Template Customizer for WooCommerce when I went to edit the new order email to admin, there was some extra info that I needed to remove that was not there in the default Woo email template. So that is why I m wondering if by installing and activating this plugin I would need to check all of the email templates.

Thank you!