A background/outline/fill may be required for designs in certain sizes that would otherwise be to small and/or detailed to cut without it. The background option is the only way we can offer these smaller sizes. Sizes will be marked in the menu "with Background" if required. Larger sizes can be requested with a background to match or create a unique 2 color layered effect, just include in the notes "add background".
The background can be any color as long as it is different than the design color, but if nothing is specified White will be the default.
Please let me know if you would like to see how a specific design will look with a background and I will get it added to the gallery.