Jawapan terkini untuk After updating to Version 29.0.1, high contrast no longer works.https://support.mozilla.org/ms/questions/10001262014-05-10T19:00:42-07:00Firefox 28 exposes your system to security vulnerabilities.
https://www.mozilla.org/security/known2014-05-10T19:00:42-07:00Gingerbread_Manhttps://support.mozilla.org/ms/questions/1000126#answer-572863<p>Firefox 28 exposes your system to security vulnerabilities.
</p>
<ul><li> <a href="https://www.mozilla.org/security/known-vulnerabilities/firefox.html" rel="nofollow">https://www.mozilla.org/security/known-vulnerabilities/firefox.html</a>
</li></ul>
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<p>You can override website colors under Options → Content → Colors.
</p>
<ul><li> <a href="/en-US/kb/accessibility-features-firefox" rel="nofollow">Accessibility features in Firefox - Make Firefox and web content work for all users</a>
</li></ul>
<p>I don't recommend it though. That also hides background images, which some sites use to display information that's essential to navigation. There are two methods that are preferable to the above:
</p><p><u><strong>Method 1</strong></u>
</p>
<ol><li> Install the NoSquint add-on.
<ul><li> <a href="https://addons.mozilla.org/firefox/addon/nosquint/" rel="nofollow">https://addons.mozilla.org/firefox/addon/nosquint/</a>
</li></ul>
</li><li> Open the Add-ons Manager (Ctrl+Shift+A; Mac: Command+Shift+A), then the Extensions category.
</li><li> Next to the NoSquint entry, click the Options button.
</li><li> Click the Colors tab. Check whatever options you're interested and set the colors, but make sure "Disable background images" remains unchecked.
</li></ol>
<p><u><strong>Method 2</strong></u>
</p>
<ol><li> Install Stylish and restart Firefox when prompted.
<ul><li> <a href="https://addons.mozilla.org/firefox/addon/stylish/" rel="nofollow">https://addons.mozilla.org/firefox/addon/stylish/</a>
</li></ul>
</li><li> Click the ≡ Menu Button and choose Add-ons.
</li><li> In the Add-ons Manager, click User Styles on the left.
</li><li> Click the Write New Style button at the top. Paste the either of the following styles in the text box, give the style a name, then click the Save button.
<ul><li> You can then toggle the style on or off by clicking the Stylish icon on the toolbar.
</li></ul>
</li></ol>
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<pre>@-moz-document url-prefix("http://"), url-prefix("https://") {
/* Dark background and light text. For more color names, see <a href="http://www.w3schools.com/HTML/html_colornames.asp" rel="nofollow">http://www.w3schools.com/HTML/html_colornames.asp</a> */
* { background-color: rgb(20,20,20) !important; color: whitesmoke !important; }
a:link { color: royalblue !important; }
a:visited { color: blue !important; }
a:hover { color: lightblue !important; }
a:active { color: red !important; }
}
</pre>
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<pre>@-moz-document url-prefix("http://"), url-prefix("https://") {
/* Light background and dark text. For more color names, see <a href="http://www.w3schools.com/HTML/html_colornames.asp" rel="nofollow">http://www.w3schools.com/HTML/html_colornames.asp</a> */
* { background-color: whitesmoke !important; color: rgb(20,20,20) !important; }
a:link { color: royalblue !important; }
a:visited { color: blue !important; }
a:hover { color: dodgerblue !important; }
a:active { color: red !important; }
}
</pre>
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<p>If you don't want to install an add-on, you can use the <em>userContent.css</em> file instead, but I don't recommend it.
</p>
<ul><li> <a href="http://kb.mozillazine.org/UserContent.css" rel="nofollow">http://kb.mozillazine.org/UserContent.css</a>
</li></ul>