Adds an option to simulate different color schemes allowing you to test <a data-l10n-name="mdn-preferscolorscheme">@prefers-color-scheme</a> media queries. Using this media query lets your stylesheet respond to whether the user prefers a light or dark user interface. This feature lets you test your code without having to change settings in your browser (or operating system, if the browser follows a system-wide color scheme setting). See <a data-l10n-name="bugzilla1">bug 1550804</a> and <a data-l10n-name="bugzilla2">bug 1137699</a> for more details.
添加 <a data-l10n-name="mdn-preferscolorscheme">@prefers color scheme</a> 媒体查询测试选项，模拟不同的配色方案。该特性可让您的样式表根据用户对界面的亮 ∕ 暗偏好作出响应。启用后，无需调整浏览器或操作系统（若浏览器遵循系统级颜色模式）的设置，便可测试代码。欲详细了解，请参阅 <a data-l10n-name="bugzilla1">Bug 1550804</a> 和 <a data-l10n-name="bugzilla2">Bug 1137699</a>。