Atendendo a pedidos, aqui vão alguns tutoriais do deviantART sobre colorização digital. Vocês podem achar muito mais na busca do site.
http://ursulav.deviantart.com/art/Scribbly-and-Ink-Tutorial-33116403
http://gold-seven.deviantart.com/art/Colouring-in-Photoshop-33788920
http://gold-seven.deviantart.com/art/Not-a-Watercolour-Tutorial-23350721
http://khaosdog.deviantart.com/art/How-to-make-things-glow-61664120
Alguns deviants que trabalham com isso:
http://ehoewell.deviantart.com
http://cornflakegal.deviantart.com
http://hqid.deviantart.com
E outras deviations legais:
http://ricoteles.deviantart.com/art/Wood-paper-65303239
http://benqwek.deviantart.com/art/omfgseries07-72938485
http://celor.deviantart.com/art/cizgili-52900486
http://gold-seven.deviantart.com/art/The-Bastard-of-Camlo-Hill-68804238
http://ideal-crash.deviantart.com/art/Busy-Fruits-Watermelon-67590330
http://saintpoet.deviantart.com/art/Caribeans-Best-Kept-Secret-58581238
http://tedikuma.deviantart.com/art/Bear-Portrait-39533453
