First, open the spreadsheet you want to add the background to.
On the Ribbon click on Page Layout and select background.
This pops up the Sheet Background screen where you can select the background image you want to use. Once you have chosen your background click the Insert button.
Now you have a background to your spreadsheet. You may have to adjust some of the fonts and colors depending upon the background image.
Editor’s note: Might want to choose either a really dark or really light colored image.
