Colorization has also been used to restore scenes from color films that were cut from the finished product but were preserved in black-and-white. In 2018, the originally intended closing scene to the 1978 film "Grease" (in which the lead characters kiss) was added to the film's 40th anniversary release. A challenge that still plagues colorization efforts is the fact that the colorized black-and-white film may not match film shot originally in color; Randal Kleiser, the director of "Grease", wanted to edit the scene back into the film but found the colors between the scenes did not match well enough to do so. Kleiser is optimistic that colorization technology will be advanced enough to match true color by 2028, when "Grease" reaches its 50th anniversary.