7 colored gel filters for light effects and color correction. It includes the largest selection of the most popular colors for controlling lighting conditions. You can also use a combination of these filters for many more variations in the color of the light. The applications are almost endless with these gel colors, from the cool effects you can do. for wallpapers, to improve skintone on portraits, to color correct or match the environment, to simulate different lights, special effects, to change the white balance and much more.