We are increasingly getting used to seeing historic films originally made in black and white, subsequently colorized, especially with the emergence of AI. This area of computer programming is still experimental. Now my project, TriColVid (I sometimes call it 'TCV'), is currently developing online on-demand colorization for which I present what is very much a prototype.
The idea for the web app is that for a film originally made in black and white, you, the viewer, get to choose whether to watch it in its original black and white version or colorize it in just one click! There are still further developments to be done with the app I'm presenting for this, but use of it is free and you don't need to register for an account.
Below are some public domain films I've been working with in developing the app.