I would try a "google search"
also, this is done with markers but is a great camoflagoue tutorial for coloring,
and she is a member on this site, she has such a fantastic blog, just viewed it this morning and came across it. this fantastic blog is "my creations" and hoping she
won't mind that it is shared her, and all the credit is to her>
http://ilinacrouse.blogspot.com/2009...-tutorial.html
you could probably do a cross comparison with a copic color chart for these colors,
she did so well, matter of fact, fantiastically well.