How to change background/font color with prompt (or by hostname?)

[pfaffman]

I work on several different machines. I like to make sure that I know which one I'm looking at. I use Linux.

With some other terminal, I have a script for each machine something like this:

xdotool key --clearmodifiers shift+F10 r 2
ssh -t badboy tmux new -As0

And that switches the terminal to a different color profile (and the connects to the machine and to tmux). I use a separate window for each host and then tmux on each of those.

I would like some way to change the color of the terminal (and the color of the tab) depending on which machine I'm on. I think what I might most like is a way to have the prompt do it. Then, I can just update a shared .bash_aliases to apply it to all my machines.