using System;
public class C {

    enum Color {
        red,
        blue,
        noColor    // This will be deprecated.
    }

    public void M1() {
        var castValue = ((int)Color.blue + (int)Color.blue);
        PrintColor((Color)castValue); // Do you want to allert this usage?
    }

    public void M2(int value) {
        PrintColor((Color)value); // Do you want to allert this usage when value is `2`?
    }

    void PrintColor(Color color)
    {
        Console.WriteLine(color);
    }
}