How exactly would that combine with current icon coloring? Can you draw a mockup of your idea?

please add it
As it is right now I have to change the sitename on the login screen, to something like this
"server.ddns.net ssh jump"
"server.ddns.net FTP"
"server.ddns.net not active"
It would be nicer to just being able to change it's icon/"icon color" to indicate it's state.

OK. We will see, if more people ask for this.

Generally, I use the color to specify the server usage (Production => red, Development => green, etc...)

But I could have Multiple connection to a production server.
Of course I can use other colors, but this means lot of color used!

Protocol could be added like a small mini icon displayed on the computer screen or on the side. I mean something like that:
https://www.iconfinder.com/icons/230567/computer_key_lock_password_protection_secure_unlock_icon

For example:

• FTP: no change
  
• SFTP: shield icon
  
• AS3: amazon icon
  

Since icons are already very small, not sure if the render could be good...

You can change the color:
https://winscp.net/eng/docs/task_connections#session_color

Hello,

Sometime I have to add different connections types for the same server (1 FTP & 1 SFTP) and I wish to use the same name.
But it's hard to recognize them since they all look the same (blue screen computer) and I need to prefix them with FTP or SFTP.

Maybe you could display a different icon depending on the connection type (FTP, SFTP, etc...)?