Branding / colour customisation

When running different instances of OpenEMR simultaneously, in order to make it clearer for users which they’re logging into, in which file can I alter the colour of the blue banner on the login screen please?

(I’ve already used other branding options for an additional logo and for a text string.)

Thanks

These seem plausible files where the respective setting might be, but I don’t know precisley what therein:

interface/login/login.php

interface/themes/login_page.scss

can change bg-primary to another bootstrap class like bg-secondary openemr/login.php at rel-610 · openemr/openemr · GitHub

This is very helpful @stephenwaite thank you.

bg-primary, bg-secondary, bg-success, bg-danger, bg-warning, bg-info, bg-light, bg-dark, bg-white