Adobe recently come out with filters which rely on downloading additional software and then real time processing in the cloud.
In other words, for these operations, Photoshop is not a stand alone program but instead relies in part on harnessing the computer power of some distant mainframe.
The results are very impressive as I have written about before. (internal link)
As attention spans get shorter and shorter and as no one truly reads on the web, this colorizing may help keep someone’s interest in history.
This is a monochrome from the Library of Congress of Ina Claire who became a silent film star.
And here is a one-click, didn’t do anything else, color interpretation by Photoshop.®