by Justin Gerard
I will be adding the colors over the underpainting digitally because I am a wizard and this is the sort of thing that wizards do.
The following image is one I finished recently using this method of digital color over a monochrome oil.
"The Last of His Kind"
To overcome this difficulty, after I have scanned in the image, I work in transparent layers set to either multiply, soft light or color. The object is to enhance the original, not alter it or interfere with the brushwork in any way. I work very transparently to slowly work the image up to the right tone.
Lastly there are some opaque normal layers and a color dodge layer or two. Remember: If you get stuck you can always add rim-light and that will probably save it.