So I fiddled with the background colors and the text last night to get rid of so many bright white backgrounds that I couldn't take anymore. But it didn't work and I made matters even worse by ticking an option that says something like 'Use system colors'. I can't quite remember because now everything is purple after everything became black -- the background and the text; don't ask me how I managed to do that -- and when I highlight the text (which I cannot see but only guess its location) by clicking, holding and dragging the mouse across, I can read some of it but I cannot use a single thing properly anymore. I sometimes manage to get this ghostly presence of a drop down menu to appear but I only see the slide bar and I cannot use it. Simply nothing works! I have tried to delete and reinstall Firefox, hoping that any settings would disappear and Firefox would be installed with its standard settings, but to no avail. I am typing this with the help of Google Chrome. Nothing wrong with it but I also like to use Firefox, because...well, just because. I use Windows 7. Is there a fix for this? I presume it has something to to with getting rid of Mozilla files altogether but how? (I have tried.)