TamperMonkey is a browser complement which allows you running JS code associated to web pages and modify their content on the fly.
You can use many user written scripts, avaliable on public repositories, but you can also write your own, maybe simpler, but useful nonetheless.
First, if you don't have it, install TamperMonkey.
Then click on its icon 
Add new script. Then copy and paste the code there, and Save.
This gets some data from the farms' URL and then
- sets a different background color for each of the farms
- puts in the title (browser tab) the farm name, task and workunit
This is nice just to know which tab you want to open, or to go back and forth in your history.
Add information about the content to the title (browser tab)