Sets or returns the background color for cells.

public Color BackgroundColor{ get; set; }
Public Property BackgroundColor() As Color
          //--- Get BackgroungColor
          Color bgColor = styl.BackgroundColor;

          //--- Set BackgroundColor
          styl.BackgroundColor = wb.Palette.GetClosestColor(162, 221, 139);
        
          '--- Get BackgroundColor
          Dim bgColor As Color = styl.BackgroundColor

          '--- Set BackgroundColor
          styl.BackgroundColor = wb.Palette.GetClosestColor(162, 221, 139)