Abstract: The apparatus for applying a stripe of colorant to a polymeric surface includes a spring biased, rotatably mounted circular magnet having a predetermined width. Non-magnetic walls extend radially outwardly from the magnet and are biased against the polymeric material. A retainer for holding a mixture of a ferro-magnetic carrier and a non-magnetic colorant is located within the magnetic field of the circular magnet. A rotatably supported roller on the side of the polymeric surface opposite the magnet supports the polymeric surface as it moves.The process of applying a stripe of polymeric colorant to an embossed electrically uncharged polymeric surface including rotating a wheel-shaped magnet, attracting a mixture of ferro-magnetic material acting as a carrier for a polymeric colorant to the magnet and pressing the magnet with the mixture against the polymeric surface.