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.

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.

Learn how to create a drop-down list in Excel without or with color using conditional formatting and data validation rules.

This article provides step-by-step instructions for color customizing your drop-down list in Microsoft Excel.

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.

To edit a drop-down list in Excel, you can use a number of tools depending on how you created the list. Here's what you need to know.