The chart on the bottom is Excel’s default formatting while the chart on the top has been heavily updated. Looking at both charts together, most people would agree that the chart on the top looks better. The purpose of Visual Design is to explain why the first chart looks better and do so from a ...
tutorial
How to Add Selective Highlighting to Your Excel Chart Background

Within the 2010 version, Microsoft Excel still does not have a feature to selectively highlight specific regions of your chart backgrounds. For example, in the chart below, let’s say that I want to highlight ONLY the third quarter periods of the year (July, August, and September). There are basically two ways to perform this task manually. ...