public static Pen AddColor(this Pen pen, Color addColor, float percent) { return(pen.Convert(pen.Color.AddColor(addColor, percent))); }
public static Pen ToNegative(this Pen pen) { return(pen.Convert(pen.Color.ToNegative())); }
public static Pen Brighter(this Pen pen, int div) { return(pen.Convert(pen.Color.Brighter(div))); }
public static Pen ToBlueGrayScale(this Pen pen) { return(pen.Convert(pen.Color.ToBlueGrayScale())); }
public static Pen Darker(this Pen pen, int div) { return(pen.Convert(pen.Color.Darker(div))); }