Change background color for saved sessions

[mossicrue]

It would be nice to have the possibility to change the background color of a saved session.
For example, this can be helpful to rapidally understant in which environment or server we are connected to.

[stale]

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[mossicrue]

bump

[mossicrue]

bump

[thesle]

bump. This is the one feature that keeps me going back to PuTTY even though it's not the best experience, especially on Linux.
I want to instantly see if I'm connected to prod, pre-prod, staging or dev by the background color on screen.