Yes! We can do back sheet printing, but your job will be considered custom. A "custom quote" is required before we can process an order with this type of request. Though it is possible to print other colors on the liner of a sticker most clients stay with black ink. We recommend staying with solid spot color artwork with no fades, gradients, or halftones, when printing on the liner of a sticker. To get your confirmed pricing you can enter a quote request through the Jakprints website by clicking on the "Get Quote" button at the top of the page. If you have any questions on this give us a call. We would be happy to help.