No idea what work is necessary, but not inexpensive. Could hit four figures.
What, a $1,000, we could have a whip-round I do hope we have another three-strip Technicolor film released by Warner this year, She Wore A Yellow Ribbon really does look stunning.
On the latest WAC podcast, George Feltenstein mentioned that a three-strip Technicolor MGM musical is currently being prepped for blu-ray (the title was unspecified). That doesn't necessarily mean that it will be out this year though since these restorations can take some time.