To change Gridline color in Excel, use Excel Options, apply a custom-colored border to the cells, or apply a custom line color. Full details here. Skip to primary navigation; ...

That cell’s fill color is set to Cyan (a neon blue). rngOld, which is the previous active cell is set to nothing—in effect, removing the temporary format. Finally, rngOld is set to Target.

1] Change the default color and font of a Comment Box in Excel Select the cell that has the comment that you want to format. Right-click on it and select Show/Hide Comments .