Actually I did these changes to my userChrome last night to make things closer to zen browser and how I want them. This isn't a great solution though as most people won't be able to do this. Vision impaired people need some accessibility love in FF.#...
This feature would absolutely wonderful to see. ui.textScaleFactor doesn't seem to affect the text size in the sidebar so isn't an option for me. layout.css.devPixelsPerPx helps a bit but to get the sidebar text to a nice size the whole FF interface ...
