Window.GridlineColor Property (Excel)
Returns or sets the gridline color as an RGB value. Read/write Long.
Syntax
expression .GridlineColor
expression A variable that represents a Window object.
Example
This example sets the gridline color in the active window in Book1.xls to red.
Workbooks("BOOK1.XLS").Worksheets("Sheet1").Activate
ActiveWindow.GridlineColor = RGB(255,0,0)