public void ColorScaleComparing()
        {
            using (var wb = new XLWorkbook())
            {
                var ws = wb.Worksheets.Add("Sheet");

                var ranges = ws.Ranges("B3:B8,C3:C4,A3:A4,C5:C8,A5:A8").Cast <XLRange>();
                var cf1    = new XLConditionalFormat(ranges);
                cf1.ColorScale()
                .LowestValue(XLColor.Red)
                .HighestValue(XLColor.Green);

                var cf2 = new XLConditionalFormat(ranges);
                cf2.ColorScale()
                .LowestValue(XLColor.Red)
                .HighestValue(XLColor.Green);
                Assert.True(XLConditionalFormat.NoRangeComparer.Equals(cf1, cf2));
            }
        }