You do not need to learn image editing to convert black and white photo to color. All you need is a tool to do that, so today we have a tool that does the same. There is a webapp that will transform black and white photo to color called Colorize Photos.
Colorize Photos uses deep learning to automatically colorize black and white photos. To use this app, all you need to do is just upload a black and white photo to the site and it will process automatically. Colorize Photos also provides API for developers to build new webapps based on Colorize Photos.