This! I've played with wezterm and ghostty but haven't been able to get this working there, so I keep coming back to iTerm2 for this exact feature - so that prod servers have a red background, etc.
As far as I know, you can still download a plugin, install it in the plugin folder, and possibly restart WordPress, but it's a bit more risky. Installing a plugin via the admin interface is much more comfortable.
That said, as a WP admin of a tiny commercial website, I find it distressing that someone else can influence the functionalities of my Website. I already didn't install Jetpack because I dislike the intrusiveness and, frankly, the spying by Autommatic which is enabled by this plugin on our revenues and commercial transactions. All this points toward a direction that is not pleasant.
The fact that we start to use LLMs for so much, but still don't know how to have "prepared statements" that separate data from instructions is quite worrisome.
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