Abstract: The triangular shape of the louvers allow light to pass through the first and second color-tinted adjacent sides to add a soft color hue to a room. The third side of the triangular louver is opaque and acts much the same as does a common blind when used to block the light from entering a room. The third side may, however have a decorative scene or pattern on one it to present a pleasant scene to the onlooker. The third side has a rotation restriction and alignment tab on it to align the third sides of the louvers so that the decorative pattern or scene is clearly illustrated and that the louver is positioned to properly block the light. Each louver is removably attached to a support system in such a manner that the louvers may be rotated to allow light to pass through two of the adjacent sides and then be rotated so that the opaque third side is parallel to the window or door and restricts the passage of the light.