In Microsoft Excel, if a cell contains a formula that results in an error, a triangle appears in the top-left corner of the cell. The triangle is an error indicator.

How to Make Colors Change With Validation in Excel. Excel's conditional formatting tool applies formatting depending on cells' contents. Validation rules can change cells font, style, size or border.

Excel allows defined functions to be executed in Worksheets by a user. Instead of a formula based on the color of a cell, it is better to write a function that can detect the color of the cell and ...

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.

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.

How to Change the Color Coding on a Microsoft Excel Graph Legend. Color can make it easier for people to identify important information, such as legends on an Excel graph.

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/fields.