This is the process how movies made in black and white are transformed into colour. A common reaction among film fans to this is similar to that of an animal lover watching their favourite pet tortured to death; it is a vile and disgusting abomination.
I'd never seen a colourised movie before I bought this set of three of Ray Harryhausen's earliest full length movies. And you know what? I like it just fine. No doubt it helps that the process was supervised by the man himself who stated that if they'd had the money they would have been filmed in colour in the first place. Also technology has improved since the process was first invented so if you didn't know that these were originally made in b/w you almost certainly wouldn't be able to guess.
As for the films themselves, well they are good examples of 1950's monster/sf movies and very much of their time; creaky by today's standards but still good fun. I remember actually seeing two of them in the cinema, probably on their second run at smaller cinemas (the fleapits), back in the 50's when I was around eight or nine and no doubt they contributed greatly to my lifelong love of science fiction and monsters.
All three come with a second dvd of worthwhile extras.
And if you really have to see them in black and white, all you have to do is click the appropriate item on the menu screen or toggle the angle button after its started.
3 classic genre movies, a bargain price, loads of extras, and in colour, or not. Everyone wins!