Wednesday was a day of rebooting my own brain, so I did what I always do when I need a reboot: I experimenting with comic creation methodology. This image of The Stompalope wasn't what I spent all my time doing, but it does pretty much involve the vast majority of the things I was experimenting with, such as alternative brush options, use of black, etc.
Generally speaking, I don't use a whole lot of truly black shadows. Such shadows, however, can really add to the quality of an image (particularly if it's black and white, or greyscale). I used to use them more, but somewhere along the lines, I almost stopped using them entirely.
I think it would be a mistake to not make use such dark shadows in the future, though it would most commonly be much more subtle than with our Stompalope friend here.