I've a feeling we're not in a Sandbox anymore

Only issue is that the bar doesn't float when scrolling. I have this and another extension that shows if and what sandbox I'm in. The sandbox one floats, so with the two extensions working simultaneously I do well with not getting mixed up at all. With a floating bar this would be an easy 5 stars.

Works charm.

Works as described. Would be 5* if the bar was "frozen" at the top of the pane, i.e. didn't disappear out of view when scrolling down. Idea for future expansion - being able to choose bars of different colours for different sandbox environments?