For this feature to work, the CSS media query which prefers the color scheme ... and click the background option to "default" or "dim" to revert to the usual dark and light Twitter themes.

Google is testing another search results snippet hover effect. This one will color the background a light gray shadow like ...

In general, it is best to use dark text on light colors for long passages.” 2. “An important aspect of color on the Web for both low vision and colorblind users is sufficient contrast between ...