tredlow: Oh crap. I never thought of that! Thanks, juano!
michaeljpatrick: I do this in general, but it's tough with the tools on this site to pick a good color. In art programs blending colors is much easier. Still, it's good to keep hue in mind when shading.
uradhere: yes dude. fucking yes
majicrobot: TOO MUCH WORK!
Piku: YES. It adds a lot of life to drawings.
swekkieboy2000: I figured this out after watching guys like egoraptor and what made their style so attractive. (that's just one of the things) but great tip!