Canon MG8100 series On-Screen Manual page 298

Select from samples will be displayed only if Album has been selected.
Various backgrounds are available on our website besides those saved in the application.
Click Search backgrounds... to access the Canon website from which you can download additional
materials for free.
Internet connection is required to access the website. Internet connection fees apply.
Exit Easy-PhotoPrint EX before installing backgrounds.
When Single color Is Selected
Select the color you want to use from Standard color or Custom color and click OK.
When Image file Is Selected
Set Image File Path and Image Layout, then click OK.