Room Darkening: Allows a small amount of light to enter the room for a greater sense of privacy, as inside objects appear as shadows. 3/8" Double Cell Cellular Shades provide superior insulation and sound absorption. A wide range of marbled pattern colors in room darkening fabric. View additional Storm colors in light filtering. Street color white/neutral. Lighter fabrics let more light into the room. For absolute light blocking see Bali's blackout style.