Customizing Sametime 12.0.2 FP2 on Windows

I found that some little customizations can be made to the Sametime web chat client UI also for the server running on Windows.
For the ST server running on Docker, customizations are documented, for the Windows based server not.

I changed the logo and the branding of the server

To change the logo go in the directory C:\Sametime\nginx-win-x64\html\images and replace banner-image.svg with a svg of your choice. I assume that the file name must remain the same, so I made a copy of the original and renamed my file to banner-image.svg

To change the text, it depends on the language.
For example to change the Italian one, go into C:\Sametime\nginx-win-x64\html\chat-client\locales\it and edit the file general.json. Find the string
“HCL Sametime”: “HCLSametime”,
and replace with
“HCL Sametime”: “RoB Sametime”,

Do the same for locales\en or whatever language you want.

The result is this, in the Firefox normal window (white) you can see the changed logo only, because the browser language is English. In the private window (black) you can see the changed logo and branding, because the browser language is Italian.

NOTE: These changes are not officially supported, I tried it and they work successfully in my environment.