All the artwork we photograph is placed on the white pages of our books without any colored borders/backgrounds to preserve the integrity of the original piece. Each piece of art is then enlarged and/or shrunk to fit the perimeter in which the images can be placed in the book.
There is not a way to add colored backdrops to your images from your account, however, if you would like to add on a colored background to any of the images in your book, the Artkive editing team can add them for $0.25 per image. Please reach out to help@artkiveapp.com for assistance.