Ability to brand default Auth0 emails

Feature: The ability to customise the default Auth0 email templates with company colours / logo without completely overriding the full template

Description: Ideally we could set our company branding (like with Universal Login) for default Auth0 emails such as verify email or change password. We understand that you can override the emails with your own templates but this is a lot of work adds 8 email templates in another system which we must maintain and update as necessary.

Use-case: We are building a new set of apps on a tight timeline and for an MVP we just need to use our own colours in the Auth0 emails for UX and continuity