Created attachment 826644 [details] invert colors.png User Agent: Mozilla/5.0 (Windows NT 5.1; rv:25.0) Gecko/20100101 Firefox/25.0 (Beta/Release) Build ID: 20131025151332 Steps to reproduce: Mac OSX has an accessibility: - System setting; - Accessibilty; - Display - Contrast: Negative/Positive (Invert colors' Actual results: Mozilla Firefox and Mozilla Thunderbird has no accessiblity of question 1 (Mac OSX), when I work with Windows. Expected results: Can the developer of Moziilla make a contrast (negative/positive in display; (inverts color)) from Firefox and Thunderbird? A shortcut will be very easy too.
I don't understand why this OS setting should be included in FF/TB. You can do that in Windows: http://www.wikihow.com/Invert-Colors-on-Your-Windows-XP http://www.wikihow.com/Invert-Colors-on-Windows-7 It's purely OS-specific.
Hi ekrem, I tried setting Windows 7 to use color inversion using the Magnifier tool. Open Magnifier from the Start Menu, then open the Magnifier options and there is a color inversion checkbox. For me, this inverted the colors on Firefox. Are you using a different technique?
Component: Untriaged → Disability Access
Loic, I think the behavior varies in various Windows systems and sometimes (if it is from a high contrast theme) doesn't include browsers.
A invert color of Windows XP doesn't work full screen, they are from top window only. My question: Can a developer make a offical invert color from Mozilla Firefox and Mozilla Thunderbird? And can they make a shortcut too? Example of screenshots: Normal screen: http://img35.imageshack.us/img35/6317/negativeinvertbefore.png Invert color screen: http://img88.imageshack.us/img88/346/negativeinvertafter.png
Summary: Accessibility: Negative → I'd like an "invert colors" accessibility feature on Windows
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