如何重新实现枚举的值

public enum Color {
    RED, GREEN, BLUE
}

Color color = Color.RED;

public interface Color {
    int RED = 0;
    int GREEN = 1;
    int BLUE = 2;
}

int color = Color.RED;

public class Color {
    public static final int RED = 0;
    public static final int GREEN = 1;
    public static final int BLUE = 2;
}

int color = Color.RED;

public class Color {
    public static final String[] COLORS = {"RED", "GREEN", "BLUE"};
}

String color = Color.COLORS[0];