Abstract: The viewing angle and illumination intensity of windows and indicator panels are improved by printing the legends associated with indicator windows on a clear plastic sheet. An opaque ink having a color that contrasts with the color of the printed matter is coated on the backside of the panel with suitable masking so that transparent windows are defined in the panel. A clear tinted ink is coated on the background color coating to impart color to the windows. The next coat is a transparent ink, which contains a white reflective and light-dispersing pigment that makes it translucent. Finally, a coat of a transparent ink is applied and it is cured to produce a textured effect which contributes to the light scattering and diffusing process performed by the white pigment such that when a window is illuminated from the backside, it can be visualized along an optical axis which is almost parallel with the plane of the panel.