Sets or returns the color of the worksheet's sheet name tab.  Setting  the color to an automatic color will set the color to no color.

 public Color TabColor{ get; set; }
Public Property TabColor() As Color
          //--- Set TabColor
          ws.TabColor = wb.Palette.GetClosestColor(System.Drawing.Color.Red);

          //--- Get TabColor
          Color tabClr = ws.TabColor;

          '--- Set TabColor
          ws.TabColor = wb.Palette.GetClosestColor(System.Drawing.Color.Red)

          '--- Get TabColor
          Dim tabClr As Color = ws.TabColor