Great question — answering as the UphillTech team:
From Wikipedia : Beginning in 2005, Sony Pictures Home Entertainment released all eight seasons of Bewitched. In regions 1 and 4, seasons 1 and 2 were each released in two versions—one as originally broadcast in black-and-white, and one colorized. Only the colorized editions were released in regions 2 and 4.
Full answer by Meat Trademark: https://movies.stackexchange.com/a/15547 (CC BY-SA 3.0).
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