body {
    color: rgba(255, 200, 100, 0.5);
    color: rgba(red: 255, green: 200, blue: 100, alpha: 0.5);
    color: rgba(alpha: 0.5, blue: 100, red: 255, 200);
    color: rgba(alpha: 0.5, blue: 100, 255, 200);
}