I think GC may have an add-on that provides all that stuff - maybe Status-4-Evar? I don't think the green progress bar is a native feature.

By the way, I would highly recommend Status-4-Evar if you want to make Firefox 4+ look more like 3.6. It's extremely configurable, but I found the preferences dialog quite confusing at first. I have it configured to show links URLs in the status bar add-on bar instead of having that weird pop-up bubble thing, and also have the 3.6-style blue progress meter.