Playing around with what my various image editing programs can do, I came up with this.
I started out with this image...chosen because it was simple (no background) and clean:
Then I converted it to a line drawing with Paint Shop Pro and some hand-editing:
Next, in Canon Photo, I did a color layer, working from the colors in the original, simplified to some extent:
Finally, back in PSP, I layed the line version over the color version as a transparent layer:
Did it work? I really want comments on this...tell me what works and what doesn't in this process.