The clear materials are completely transparent so there will still be some transparency to the printed area. Printing darker colors and applying to a dark surface will make your printed design very difficult to see. Lighter colors would be recommended, however most home and office printers do not print in white. If you'd like to try samples for testing, please visit the link below and we'll be happy to send you a few sheets to try out for free. https://www.onlinelabels.com/samples