How to set different logo in different Customer Portals under the same organization account

How to set different logo in different Customer Portals under the same organization account

I think that my question is not supported for now.
We have 2 working companies under the same organizational account. We have also created 4 applications (2 for the one company and 2 for the other) and we also use customer portal for these apps.
My question is if it is possible to have different company logo in each application. 2 applications with the one logo and 2 with the other.
I think no, as it is not possible to manage 2 companies under one organization account like Zoho Books for example.

I think that we cannot set 2 organization logos in Creator in general.