Colorizing Old Photos

There is a new technique for this, and one person is doing a great job of taking old portraits and other scenes and coloring them into striking presentations.  So good the people and events seems to come to life.  I don't know the technique but it is marvelous in my opinion.  And I understand takes hours and hours per photograph.  I have some saved to my computer, but here are some of the Titanic, well worth a look.

http://petapixel.com/2013/08/23/colorized-1912-photographs-of-the-titanic/

More later if you are interested in this topic, just comment.