A user interface device of a wireless communication device in which one or more of the keys on the user interface are fluorescently illuminated when the user interface is in active mode. One or more keys may include a layer including an opaque film area and a non-opaque area, such as an aperture in the opaque film area in the shape of indicia, such as a number, letter or function indicator. The opaque film area blocks illumination, and the non-opaque area allows illumination to pass through it. Fluorescent ink at the non-opaque area of a key fluoresces when illuminated in active mode, providing fluorescent indicia viewable by a user.