Superstar g+ developer +Gerwin Sturm has come up with a great new Chrome extension for Page Managers. Called G+ page indicator, it's a great addition to the Page Manager's toolbox.
As a Page manager on Google+ it's often hard to remember your identity when commenting and resharing. this can sometimes lead to embarrassing mistakes. This extension provides a simple and effective fix.
From the blurb:
Make sure you are who you think you are when commenting on Google+.
This script simply adds some colour to your Google+ when you are using it as a page and not as yourself. This should help you prevent commenting as a page when you actually wanted to comment as yourself :)
Download it from here