Were you ever inquisitive about how special effects in movies are made? How do film makers recreate the mystical world of Hogwarts or conjure a pre-historic earth? How do motion picture makers blend CGI with real life action shots? All of these motion picture miracles have been made possible by the green screen. It is also known as chroma key, blue screen, and color separation overlay (CSO). Devoid of the green screen LA technology, which is applied in studios all around the wonderful city of Los Angeles (Chroma Key technology) several memorable motion pictures wouldn’t be developed. Moviegoers will be caught up with uninteresting motion pictures with lousy, minimal, or no visual effects at all. With no chroma key, a lot of opportunities in movie-making would still be in the desires and creativeness of film makers.