Solve merge conflict.

Author: KlausLoeffelmann

src/System.Windows.Forms/src/System/Windows/Forms/Application.cs

@@ -386,7 +386,8 @@ private static int GetSystemColorModeInternal()
     [Experimental(DiagnosticIDs.ExperimentalDarkMode, UrlFormat = DiagnosticIDs.UrlFormat)]
     public static bool IsDarkModeEnabled =>
         !SystemInformation.HighContrast
-        && (SystemColorMode == SystemColorMode.Dark);
+        && (ColorMode == SystemColorMode.Dark
+            || (ColorMode == SystemColorMode.System && SystemColorMode == SystemColorMode.Dark));
 
     /// <summary>
     ///  Gets the path for the executable file that started the application.