private void AddStop(Color color, double offset)
        {
            var gradientStop = new GradientStopProxy(color, offset);

            gradientStop.PropertyChanged += this.GradientStop_PropertyChanged;
            this.gradientStops.Add(gradientStop);
        }
 private void AddStop(Color color, double offset)
 {
     var gradientStop = new GradientStopProxy(color, offset);
     gradientStop.PropertyChanged += this.GradientStop_PropertyChanged;
     this.gradientStops.Add(gradientStop);
 }