I'm creating a multi-tenant web application. We (the vendor) are developing an application where each organization that subscribes will have its own administration dashboard.

The "client facing" admin dashboard is themed using Bootstrap 4 and a commercial Bootstrap template which looks nice. However, our "vendor" dashboard will be much simpler and is mostly just a UI to add/remove organizations and change some settings. The rest of the administration would be done by logging into one of the organization's admin dashboards with escalated privileges.

My concern is continuity. Vendor administrators (i.e. people in my company) might have a poor user experience while managing clients if the page layout and theme keeps changing when switching to our admin panel to the client admin panel and vice versa.

On the other hand, in my opinion having two different styles makes it clear and obvious which system your currently working in. It would also save some costs not having to use a commercial theme which only our company would be viewing.

Any thoughts on this? Is there recommendations against having two different styles/layouts?