FarPoint.Web.Spread.NamedStyleCollection nsc = new FarPoint.Web.Spread.NamedStyleCollection();
FarPoint.Web.Spread.NamedStyle ns = new FarPoint.Web.Spread.NamedStyle("StyleData", "DataAreaDefault");
FarPoint.Web.Spread.NamedStyle ns1 = new FarPoint.Web.Spread.NamedStyle("HeaderData", "HeaderDefault");
System.Collections.ArrayList c = new System.Collections.ArrayList(2);
ns.BackColor = Color.Yellow;
ns.Border = new FarPoint.Web.Spread.Border(BorderStyle.Double, Color.Blue);
ns1.BackColor = Color.Teal;
ns1.Border = new FarPoint.Web.Spread.Border(BorderStyle.Double, Color.Red);
c.Add(ns);
c.Add(ns1);
nsc.AddRange(c);
FpSpread1.NamedStyles.AddRange(new Object[] {nsc[0], nsc[1]});
FpSpread1.ActiveSheetView.DefaultStyle = nsc[0];
FpSpread1.ActiveSheetView.ColumnHeader.DefaultStyle = nsc[1];