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.

In case of an error, a triangle appears in the corner of the cell. You can change the Color of an Error Indicator from green to any other in Excel.

Can Excel sort by color? Absolutely. In addition to sorting by values, Excel can sort by cell color, font color, and cell icon. First, you must you must define the colors for your sort columns ...

Counting records or values in Microsoft Excel is easy. Counting individual cells by their fill color definitely isn't. Using an old function and a matrix tames the problem.