You can modify the style rules on an individual website using either a userContent.css file or the Stylish extension. The Greasemonkey extension allows you to use JavaScript on a site-by-site basis, which provides further opportunity for customization. But these all would take time and testing to develop and perfect (and perfection might not be possible)...

Perhaps you can find a good add-on to handle this? In another recent thread, the poster mentioned this one for modifying fonts:

Customize Your Web

I haven't tried it myself or compared with others that might be available but you could take a look.

Incidentally, if you don't mind posting the address of the page and the color scheme that you want, someone might be able to assist with some style rules.

You can use the NoSquint extension to set font size (text/page zoom) and text color on web pages.

• NoSquint: https://addons.mozilla.org/firefox/addon/nosquint/

It's been ages since I messed with CSS or JS but it's worth a try. I'm not picky about the colors, just want something more readable than the current. The page is the DirecTV Guide, with black background and gray fonts. Just about any color font would be better.

If I change the CSS font color, will it save?

Thanks for your help.

No Squint does exactly what I needed done. It looks like a miracle. Thank you for the help.

You're welcome

No Squint worked great for me too until the last upgrade. I tried everything including disabling it, I had to remove it completely to be able to read my mail program correctly. (Net@ddress) It distorted a few other websites too and no amount of adjusting would fix them.