The Technicolor process required vast amounts of light on the sets and actors to pass their images through a special camera lens prism and color filters and still register on the negative filmstock. The differences between the two versions are minor. There are minor difference in camera angles and in action, but the shot continuity is virtually the same. There were still problems with the process. We assume some of those problems are evident in the finished Black Pirate.
Some interiors are hard to pick picture details out of the deep shadows.
But, we nitpick. Overall, this video edition on DVD looks better than any other presentation of The Black Pirate we have ever seen, including a showing on 35mm film. To inexperienced eyes, early Technicolor is difficult to distinguish from the colorized films that plagued the home video market some 10 to 15 years ago. The impression should not be given that one may expect the rich Technicolor of Gone with the Wind or The Wizard of Oz. This left many colors inadequately or completely unregistered.