fpSpread1.Sheets[0].Cells[0, 0].Value = 3;
fpSpread1.Sheets[0].Cells[1, 0].Value = 2;
fpSpread1.Sheets[0].Cells[1, 1].Value = 10;
fpSpread1.Sheets[0].Cells[0, 1].Value = 1;
FarPoint.Win.Spread.TwoColorScaleConditionalFormattingRule two = new FarPoint.Win.Spread.TwoColorScaleConditionalFormattingRule(new FarPoint.Win.Spread.ConditionalFormattingColorValue(System.Drawing.Color.Yellow, 1, FarPoint.Win.Spread.ConditionalFormattingValueType.Min), new FarPoint.Win.Spread.ConditionalFormattingColorValue(System.Drawing.Color.Orange, 10, FarPoint.Win.Spread.ConditionalFormattingValueType.Max));
fpSpread1.Sheets[0].SetConditionalFormatting(0, 0, 2, 2, two);