Hi all, I have made a extension for the test case highlighting which works in dark mode. Since the new update has been made by MikeMirzayanov it doesn't fit good for dark mode users, so I made a extension which will highlight the testcases appropriately in dark mode. Here is the Link for the extensionCodeforces TestCase Dark Mode. Before : .png) After : Currently this extension is available only on firefox. And Finally thanks MikeMirzayanov for this amazing platform. Hope you like it!