ShowConsoleColors

using System;
using System.Linq;

class ShowConsoleColors
{
    static void Main(string[] args)
    {
        var colors = Enum.GetValues(typeof(ConsoleColor)).Cast<ConsoleColor>();
        foreach (ConsoleColor color in colors)
        {
            Console.ForegroundColor = color;
            Console.WriteLine($"{color.ToString()} ");
        }
    }
}