Let's change the background color of the first row to the “olive brown” color we just created. First, select the row by clicking on the row header to the left of the sheet, then select the format menu and choose the cells option.

The format cells screen will let you change all kinds of things related to the display and format of items in a cell, as well as the cells themselves.

To change the background of the selected cells, click on the background tab. The menu defaults to the tab you most recently used. In this case, it is defaulted to the background tab. If your menu didn't default to the background tab, click on it to display the background options screen.

Next, select the “olive brown” color created in the previous step. Click the OK button to apply the changes and you're finished.