The colorized version of King Kong (1933 has been released on LaserDisc and VHS in the US and on DVD elsewhere in the world, such as on a British (or Australian, can’t remember which) DVD by Universal, but not in the US.
The colorized version of Casablanca (1943) is only available on an “Anniversary Edition” LaserDisc by MGM/UA Home Video that was a Japan-only release.
I was wondering if anyone preserved those colorized versions. There is, however, a DVD preservation of the colorized version of King Kong being sold on eBay, but I’d rather not buy that, seeing how it’s illegal to sell fan edits and fan preservations online.
I’ve heard that the colorized version of King Kong is unwatchable and of a poor quality standard, but I don’t think that I’ve heard anything negative about the quality of the colorized version of Casablanca.
I don’t own a LaserDisc player or any LaserDiscs, but I will have to wait until I’m living on my own in order to purchase a LaserDisc player and some LaserDiscs, so I can preserve films and features not on current American home video releases (such as the 1.33:1 open matte/pan-and-scan combo version of Titanic and the English version of the 1982 Japanese animated Wizard of Oz (seeing how every version of that on YouTube is in poor quality)).