using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        public static void Main()
        {
            // Get a string array with the names of ConsoleColor enumeration members.
            String[] colorNames = ConsoleColor.GetNames(typeof(ConsoleColor));
            // Display each foreground color except black on a constant black background.
            Console.WriteLine("All the foreground colors (except Black) on a constant black background:");
            foreach (string colorName in colorNames)
            {
                // Convert the string representing the enum name to the enum value.
                ConsoleColor color = (ConsoleColor)Enum.Parse(typeof(ConsoleColor), colorName);
                if (color == ConsoleColor.Black) continue;
                Console.Write("{0,11}: ", colorName);
                Console.BackgroundColor = ConsoleColor.Black;
                Console.ForegroundColor = color;
                Console.WriteLine("██{0}.", colorName);
                // Restore the original foreground and background colors.
                Console.ResetColor();
            }
            Console.WriteLine();
            // Display each background color except white with a constant white foreground.
            Console.WriteLine("All the background colors (except White) with a constant white foreground:");
            foreach (string colorName in colorNames)
            {
                // Convert the string representing the enum name to the enum value.
                ConsoleColor color = (ConsoleColor)Enum.Parse(typeof(ConsoleColor), colorName);
                if (color == ConsoleColor.White) continue;
                Console.Write("{0,11}: ", colorName);
                Console.ForegroundColor = ConsoleColor.White;
                Console.BackgroundColor = (ConsoleColor)Enum.Parse(typeof(ConsoleColor), colorName);
                Console.WriteLine("███{0}.", colorName);
                Console.ResetColor();
            }
        }
    }
}