Ray, I am grateful to you for these four minutes of "Voodoo" Macbeth footage which I did not know existed. Thank you so much.
An interesting footnote: It was Virginia Nicolson Welles, Orson's first wife, who had the idea of transposing the setting to Haiti and turning the three witches into voodoo witch doctors.
And here is what Welles had to say about African-American actors. (My source is Robert Stam's article, "Orson Welles, Brazil and the Power of Blackness" which appeared in New York University's journal "Persistence of Vision" in 1989.)
Asked in Brazil why he had called on black actors to represent Shakespeare, Welles responded by affirming the superiority of black actors: "In all my years of experience, I have concluded that black actors are more natural, more understanding, and more sure of themselves, even in the most difficult passages, than white actors, and that they perform the roles given them with more facility."