Really?
Do you want a real-world example have a look at US White House:
> President Obama talks on the phone aboard Air Force One. April 10, 2014.
> The Airborne Executive Phone has the red light on, which means it's a secure call.
https://www.electrospaces.net/2017/01/the-presidential-commu...
It is further made more clear because NSA literally calls their secure network the red network.
That's daft. You want to highlight (red) the insecure state, and reassure (green)in the secure state.