AS-IS: There is a group of companies, every company (exclude one) have the same brand (same colors, names, ...), but this one company (our) have different brand (e.g. wecare, with different colors, ...) and the problem is that we share one tenant on o365 (we can´t make our own tenant). As we are part of the same tenant, the visual is the same for every company. For our sites we use prefix (wecare) and join sites to one hub.
TO-BE We need to change our header to be different from the other companies, and stay on that tenat.
Is there any way we do this (without some big hacking)? Maybe with some spfx webpart or extension?
Thank you for your help :)