title: Set Different Terminal Background for Each Directory
body: <p>I seem to recall stumbling across an article on zsh about how it was possible to have different themes (or presumably, different theme settings, for different directories). In other words, you'd be able to do things like set the background color of the terminal to be blue for one directory, black for another, etc. I couldn't find the original article or anything matching what I had in mind.</p>
  
  <p>Is this something that can be done?</p>