The starter kit includes color gel material in: 1-Red 1-Yellow 1-Blue 1-Green 2-Diffusion Sheets 2-UV Color Correction Filters Also included in the kit is a pair of Gel Gaskets that are great for holding gels in position for periods of time, under intense heat. Our Gel Gasket (MI-005) and the diffusion material (4008) are available separately. Some Novatron users like to have one Gel Gasket for each sheet of material in their library. This keeps things organized.