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Upgrading to firefox 29 broke my accessibility setup in user_content.css

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In all prior versions of firefox I used user_content.css to force backgrou to black and foreground text to yellow. With firefox 29 I now get a white background and white or yellow text. This is unusable. I am running windows 7 and do have a high constast color scheme. Is this [pssibly conflicting with the new "high contrast" feature in firefoc 29? https://support.mozilla.org/en-US/kb/accessibility-features-firefox-make-firefox-and-we?esab=a&as=aaq#w_using-a-high-contrast-theme Is there any way to turn off the automatic detecting of high contrast if that is the case so that I can control my own color schemes etc... with user_content.css as before?

If that is not the case, is there a new format required for user_content.css?

In all prior versions of firefox I used user_content.css to force backgrou to black and foreground text to yellow. With firefox 29 I now get a white background and white or yellow text. This is unusable. I am running windows 7 and do have a high constast color scheme. Is this [pssibly conflicting with the new "high contrast" feature in firefoc 29? https://support.mozilla.org/en-US/kb/accessibility-features-firefox-make-firefox-and-we?esab=a&as=aaq#w_using-a-high-contrast-theme Is there any way to turn off the automatic detecting of high contrast if that is the case so that I can control my own color schemes etc... with user_content.css as before? If that is not the case, is there a new format required for user_content.css?

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Note that the name of the file is userContent.css.

I'm not sure whether a high contrast theme would interfere, but you can test that by temporarily disable the high contrast theme to see if that makes the code work.