Determines a color for an E3Chart grid's background. Default value of this property is white (RGB(255, 255, 255)). Example:

Sub CommandButton1_Click()
  Set E3Chart1 = Screen.Item("E3Chart1")
  Old = E3Chart1.GridBkColor
  MsgBox "Next"
  E3Chart1.GridBkColor = RGB(0, 255, 0)
  MsgBox "Return"
  E3Chart1.GridBkColor = Old
End Sub