Simple RGBA Color manager for JS, Needed for C# style

Color.js

var Color = {
    initialize: function(R, G, B, A){
        function verify(i) {
            return (!is_int(i) || i < 0 || i > 255) ? 255 : i;
        }
        
        this.R = verify(R);
        this.G = verify(G);
        this.B = verify(B);
        this.A = verify(A);
    }
};

var start = new Color(255,255,255,255);

etc.