Black seamless paper is easy to work with and is versatile,color-wise; without using ANY gels or filters of any type, black seamless paper can be made to appear black,dark gray,light gray,blue,light blue,and then into the realm of off-white and even white, all based on how much light is applied to the backdrop,in relation to the main light exposure. And as I said, all without using ANY gels. And of course, with gels added to the mix, black paper takes well to many gel colors.