Is there any way to quickly access the options menu without clicking "Firefox/Options"?

Question

I want to be able to quickly jump to the Firefox Options menu without having to click the "Firefox" button and then "Options" after. The reason I want to do this is because I want to be able to quickly change fonts, and I also want to quickly allow/disallow websites from using their own font and background colors. The bright whites that websites often use hurt my eyes. Some websites don't work properly if they aren't allowed to use their own font and background settings, so I have to switch it back and forth, depending on the website. It is annoying to have to go through multiple Firefox menus every time I change my font and background settings. A quick keyboard shortcut or a button press to access options or allow/disallow font and background settings would be great. Any help?

Answer 1

One alternative solution would be to investigate some of the add-ons available. Some of these may need a bit of setting up but then modify how websites display.
* https://addons.mozilla.org/en-US/firefox/addon/nosquint/
About this Add-on
Having a hard time reading on the web? Is that website with the ridiculously small font and hot-pink-on-slightly-darker-hot-pink text raising your blood pressure? NoSquint can:
Override the default text-only and full-page (both text and images) zoom levels for all websites
Enforce your own foreground and background colors
Remember your zoom levels and color settings per site, automatically applying them when you return.
Disagree with what NoSquint calls a site? A powerful exceptions mechanism lets you split up or group together sites with URL patterns.
A second alternative if you are good with the keyboard is to use keyboard existing shortcut sequences. I do not know them offhand for Windows, but they are not likely to be particularly convenient unless well learnt and used frequently.