fpSpread1.Sheets.Count = 3;
fpSpread1.InterfaceRenderer = null;
fpSpread1.VisualStyles = FarPoint.Win.VisualStyles.Off;
FarPoint.Win.Spread.SheetTab st = new FarPoint.Win.Spread.SheetTab(fpSpread1);
st = fpSpread1.TabStrip.DefaultSheetTab;
st.BackColor = Color.Red;
FpSpread1.Sheets.Count = 3
FpSpread1.InterfaceRenderer = Nothing
FpSpread1.VisualStyles = FarPoint.Win.VisualStyles.Off
Dim st As New FarPoint.Win.Spread.SheetTab(FpSpread1)
st = FpSpread1.TabStrip.DefaultSheetTab
st.BackColor = Color.Red