*Edited* (5 years and 1596 days ago)
I know, it's not really original but I like to do coloration.
This was just done with many adjustment layers and masks. I also copied the blue channel to get some of the highlights back. I used a layer set to color dodge and another set to color burn and used a 5% opacity brush to pain in shadows and highlights. At the end I used the Shadow/highlight filter. (5 years and 1601 days ago)