Comment 12 for bug 1478173

I disagree with closing this as “WORKSFORME”. Just because core Firefox plastered over the problem does not mean it's not an issue for other cases. I have at least one Firefox add-on that continues to display unreadable text because this bug causes the CSS InfoBackground and InfoText values in styles to result in white-on-white text colors. It will even affect websites that happen to style themselves in these colors (example demo: https://artific.com/library/css-2-system-colors.html). Who knows what other software might also be affected. I have just tried the patch posted here and can confirm that the issues I describe are definitely caused by this bug.

The themes are clearly broken and should be fixed. An explicit background *and* foreground color should always be specified. There is no guarantee the background image/effect will be used by a given application, and relying on it is only asking for random usability problems.