Color Gel Filters for lighting effects and color correction. Cut to fit most Flash model. Includes the largest selection of popular colors for controlling light from your strobes. You can also use combinations of these filters for a whole lot more variation to the color of light. Applications are almost endless with these gel colors, from cool effects that you can do for backgrounds, for enhancing skintone in portraits, color correcting or matching ambient, simulating different kinds of light, special effects, white balance and a whole lot more.