Instead of concentrating on a rather nondescript Technicolor movie such as "The Emperor Waltz", what about the complete two-strip Technicolor versions of the 1930 "The Vagabond King", "Mamba" and the 1929 "Mysterious Island". all of which are extant in Technicolor now and very much need...
Really don't know why they decided to release that particular Paramount Technicolor movie on Blu Ray, as it was a flop at the time and still isn't a great movie. What about releasing Paramount's brilliant "Blue Skies" (46) or "Lady in the Dark" (44) on Blu Ray ?. That would be more to the point...