The technique is perfect, with a palette, for repetitive work, e.g. scales, feathers – you name it.
But I don't have the artist's permission to print out his pictures, so I'll just introduce you to his book, by way of the book cover on his blog:
I just bought a copy. Cannot wait to get it!
And if you want to see the best ode to the political correction of The Cookie Monster of Sesame Street that I have ever seen, click that link. Even his armor would work for the marker coloring technique. Decisions, Decisions…