Favicon

Can you please add the ability to upload a favicon? For those of us with multiple client workspaces open at once, it is hard to tell which tab is the one for which space unless I click it. (I currently have 6 open in my browser, and they are all the purple H.)

This has come up in our organization as well - having a customizable favicon would boost our brand and help our users recognize the difference between different workspaces more easily.