Something like this?

@-moz-document domain(www.missing-lynx.com) {
:visited img { outline: 1px solid red !important; }
}

Thanks for the reply. Which file do I insert that into, and would I need to do it for each domain I want?

Also, any idea why it worked in previous versions and not in FF4? Would there be one line to restore it for all sites?

After a bit of googling I figured this must be added to userContent.css, but hasn't made any difference - still no borders.

Do you see that outline after you have visited a link?

If the visited link status doesn't show then check that you keep history and that you do not run Firefox in Private Browsing mode.

• You enter Private Browsing mode if you select: Tools > Options > Privacy > History: Firefox will: "Never Remember History"
• To see all History and Cookie settings, choose: Tools > Options > Privacy, choose the setting Firefox will: Use custom settings for history
• Uncheck: [ ] "Permanent Private Browsing mode"

You can use this code for all sites.

:visited img { outline: 1px solid red !important; }

See this for other outline-style examples:

• https://developer.mozilla.org/en/CSS/outline-style

Thanks for the follow up. No I don't get an outline after visiting, and am not in Private mode (no problem with text links showing visited colors), but I've tried some other examples that I found while searching and they don't work either so I must be doing something wrong.

I've just been adding the lines of code to the end of userContent.css on a new line after the last bracket already in the document. Is that right?

I also tried disabling the NoSquint plugin and restarting because it includes custom coloring for links so I thought it might be causing trouble but that didn't help either.

I'm also using the portable version of FF4, would that make any difference?

You can try the Stylish extension to see if that works.

• Stylish: https://addons.mozilla.org/firefox/addon/stylish/