as many as eight generations away from the original negative, in particular the entire "Judy's Apartment" sequence, perhaps the most pivotal sequence in the entire film. When such large portions of re-creation become necessary, then the danger of artistic license by the restorers becomes an issue, and the restorers received some criticism for their re-creation of colors that allegedly did not honor the director's and cinematographer's intentions. The restoration team argued that they did research on the colors used in the original locations, cars, wardrobe, and skin tones. One breakthrough moment came when the Ford Motor Company supplied a well-preserved green paint sample for a car used in the film. As the use of the color green in the film has artistic importance, matching a shade of green was a stroke of luck for restoration and provided a reference shade. When restoring the sound, Harris and Katz wanted to stay as close as possible to the original, and had access to the original music recordings that had been stored in the vaults at Paramount. However, as the project demanded a new 6-channel DTS stereo soundtrack, it was necessary to re-record some sound effects using the Foley process. The soundtrack was remixed at the Alfred Hitchcock Theatre at Universal Studios. Aware that the film had a considerable following, the restoration team knew that they were under particular pressure to restore the film as accurately as possible. To achieve this, they used Hitchcock's original dubbing notes for guidance of how the director wanted the film to sound in 1958. Harris and Katz sometimes added extra sound effects to camouflage defects in the old soundtrack; i.e., "hisses, pops, and bangs". In particular, they added extra seagull cries and a foghorn to the scene at Cypress Point. The new mix has also been accused of putting too much emphasis on the score at the expense of the sound effects. Home media In 1996, director Harrison Engle produced a documentary about the making of Hitchcock's classic, Obsessed with Vertigo. Narrated by Roddy McDowall, the film played on American Movie Classics, and has since been included with DVD versions of Vertigo. Surviving members of the cast and crew participated, along with Martin Scorsese and Patricia Hitchcock. Engle first visited the Vertigo shooting locations in the summer of 1958, just months after completion of the film. Vertigo was first released on DVD in March 1998. On October