It already exists, it's called toon shading http://en.wikipedia.org/wiki/Cel-shaded_animation http://en.wikipedia.org/wiki/Cel-shaded_animation and it was used

It already exists, it's called toon shading http://en.wikipedia.org/wiki/Cel-shaded_animation http://en.wikipedia.org/wiki/Cel-shaded_animation and it was used also in a commercial game called XIII http://en.wikipedia.org/wiki/XIII_(video_game) http://en.wikipedia.org/wiki/XIII_(video_game)