public static Task AddColorAsync(BlockingCollection <Info> input, BlockingCollection <Info> output)
 {
     return(Task.Factory.StartNew(() =>
     {
         foreach (var item in input.GetConsumingEnumerable())
         {
             if (item.Count > 40)
             {
                 item.Color = "Red";
             }
             else if (item.Count > 20)
             {
                 item.Color = "Yellow";
             }
             else
             {
                 item.Color = "Green";
             }
             output.Add(item);
             ColoredConsole.WriteLine($"stage 5: added color {item.Color} to {item}");
         }
         output.CompleteAdding();
     }, TaskCreationOptions.LongRunning));
 }