I appreciated firebug back in the day, but a few years ago the devs decided to force a white background to it, which did not work in our darkened media studio. They would not reconsider (not the first time I’ve had a run in with white bg fascists; they’ve now taken over the prefs panel).

Thankfully moz dev tools were getting to be just good enough around that time and supported a dark theme. Last time I ever used firebug, thanks for all the fish.