the Firefox setting "browser.display.use_document_colors"

Up until now, I have never heard of this setting, nevertheless it had gotten toggled a while ago. It had made me a little nervous during the last couple of weeks.

How I solved the issue:

• searched the web for "Firefox ignores stylesheets",
• too many hits of course …,
• found a hint pointing to PrefBar,
• installed the Firefox Add-on by the name of PrefBar,
• toggled the Colors check box on that tool bar,
• which surprisingly did, what I had not expected.

But that did not reveil me, which Firefox setting was involved.

• So I launched about:config,
• filtered by "color",
• toggled the Colors check box another couple of times on PrefBar,
• until I finally got aware of browser.display.use_document_colors changing its value simultaneously.

I have no idea, how this setting had gotten toggled a couple of weeks ago. Now everything is fine again.

What a wicked little thing!!

I am really relieved, this got finally solved.