We have added our data to the line chart. Now, let’s customize the chart, so it has the details and style we want.
Change the color of a chart
When you insert a chart, small buttons appear next to its upper-right corner. Use the Chart Styles button to quickly change the color or style of the chart.
Click the chart you want to change.
In the upper-right corner, next to the chart, click Chart Styles.
Click Color and pick the color scheme you want, or click Style and pick the option you want.