LUME cube rbgy color gel pack is equipped with 4 basic rbgy (red/blue/green/yellow) and color gel, which warms different degrees of lue cube lighting output. We decided to use a built-in magnet mount and a light-house housing to ensure that the rbgy color gel is attached. You can stack magnets on both sides and each other color gels on top of them (other accessories) Blending creative colors to achieve a unique look! is endless with this creative color gel pack.