TUTORIAL >>> A quick tutorial (verithin and Marker)

I know this is an old post, Molested Cow, but what color pencil did you use for contrast/shadow in your tutorial? Do you use just a regular black Prismacolor for shading over the green marker, for example, or do you use a darker shade of green pencil for shading? I have tried both methods as I practice marker rendering (which I normally hate, compared to digital rendering) but with the black, my rendering examples appear a bit muddy but maybe that’s what’s expected, since it’s not realism we are after in marker renderings, right?

Thanks much. I love your tutorial!