Some shadowboxes look awesome with one of these little visuals. There is an "option" drop-down box if these are available to go inside. You can choose one per box... no additional charge.
Background colors can make the box. You can choose a color (also in a drop-down when you choose a box), or you can let me paint what color I think would look best. It generally will "go" with the rest of the colors inside. Most of the One-of-a-Kind's don't have paint at all, but paper from old maps, old diagrams or pictures out of books, a piece of scrapbooking emphemera, or old playing cards.