Excel's conditional formatting tool applies formatting depending on cells' contents. Validation rules can change cells font, style, size or border. They can also change the text's color.

Microsoft Excel 2007's conditional formatting feature allows you to format cells based on certain criteria. As an example, you might want the row color to change based upon a credit or debit on a ...

The default active cell format in Microsoft Excel isn't all that easy to see, but you can use this easy-to-implement code solution to change that.