I saw the play; Sparknotes is an excellent recap of the play.
In 2013 digital restoration of the film was done by Sony . The digital pictures were frame by frame digitally restored at Prasad Corporation to remove dirt, tears, scratches and other artifacts. The film was restored to its original look. This was part of the Stanley Kramer 100 year celebration, he would have been 100 years old on Sept. 29, 2013. 
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