Fix white color after help

Author: nohwnd

src/Cli/dotnet/commands/dotnet-test/TestingPlatformCommand.Help.cs

@@ -16,6 +16,7 @@ public IEnumerable<Action<HelpContext>> CustomHelpLayout()
         {
             yield return (context) =>
             {
+                var originalOutputColor = Console.ForegroundColor;
                 Console.WriteLine("Waiting for options and extensions...");
 
                 Run(context.ParseResult);
@@ -34,7 +35,7 @@ public IEnumerable<Action<HelpContext>> CustomHelpLayout()
                 WriteModulesToMissingOptionsToConsole(moduleToMissingOptions);
 
                 Console.WriteLine();
-                Console.ForegroundColor = ConsoleColor.White;
+                Console.ForegroundColor = originalOutputColor;
             };
         }