Gayatri Agencies now has a shade card fabric with a light blocking backing. The backing is white and will show on the roller with a back roll. We do not counsel using this cotton with the un backed cotton as the colors will always be a different dye lot and will not really match. Here at Gayatri Agencies Fabrics we have a large selection of commercial colour ways to choose from. Have a look at the fabric colours and see which one is for you. Colour charts prominence the colour for shade cloth.