To customize the look and feel of Infuse on Apple TV you can display your own artwork for Favorites displayed on the home screen. The link below aims to provide a showcase of user-created samples from which to choose from.
Master showcase link
How do I add favorite tile images?
Option 1. Add an image named favorite-atv.jpg (png works too) to the folder which is set as a favorite. Optimal resolution is 1920 x 1080 pixels.
Option 2. Long-press on a Favorite and click the Select Artwork option to browse for an image.
PS - If you are interested in having your images added to the master showcase link, just drop me a PM.
PPS - Big thanks to xoniq for the inspiration for this thread.