static void Main(string[] args)
{
Console.BackgroundColor = ConsoleColor.White;//設置背景色
Console.ForegroundColor = ConsoleColor.Black;//設置字體顏色
Console.WriteLine(" 123");
Console.BackgroundColor = ConsoleColor.Blue;
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(" 2222");
Console.BackgroundColor = ConsoleColor.Gray;
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(" 3333");
Console.Read();
}