text: Title: DOC: Add an example showing how to modify the colorbar
  Body: It would be helpful to have an example that shows how to extract the matplotlib colorbar from the display so the user can modify the size, font, etc.
  
  We show how to do this in the [SAIL example](https://arm-development.github.io/sail-xprecip-radar/radar-precip/plot-method-description-figure.html), but this should be in our main documentation.