If you are bored of seeing the same old black gridlines in Microsoft Excel 2010 when creating new Excel sheets, then there is no need to keep them that way.
Here is how to change the default gridlines color in Microsoft Excel :
1. Open Excel and select File > Options.
2. Click on Advanced options and scroll down to the setting “Gridline color”. Change it from the default color of black to any color as desired.
3. The newly opened sheet will now have the changed gridline color.