Editor styles to reflect customizer font and color settings

Hi,
Is there any way to get the editor styles to be based on settings implemented in the Customizer using GP premium?
My front is displaying with system font stack on front end but with a serif font in editor?

This site is running Gutenberg plugin.

I am testing setting css color and background colours for frontend and Gutenberg via css variable that i added via functions.php

I wanted the ability to update fonts as well!

Happy to provide username and password if required.

Will you ever move to using css variables in future? they are awesome.

I am only using a flywheel test site, URL supplied.

Cheers,
Vj