FarPoint.Win.Spread.StyleInfo clone = new FarPoint.Win.Spread.StyleInfo();
clone.BackColor = Color.Yellow;
object o = new object;
o = clone.Clone();
FarPoint.Win.Spread.StyleInfo si = new FarPoint.Win.Spread.StyleInfo("StyleHeaders", o);
fpSpread1.ActiveSheet.ColumnHeader.DefaultStyle = si;