I keep seeing these drawings with simple, pastel or bright colors that make a good drawing really pop into something more. So I've messed around with it last night. In order of drawing:
I definitely consider this last one the most successful in terms of color. I think if I get a little more involved with these kinda pieces, or possibly throw some texture into the mix, it'd be something much more... polished, I suppose? Anyhow. Should be seeing more of this later. Also here is the underdrawing of the last one, because I can't decide if maybe I shouldn't have gone more of a charcoal route with it.
It would have benefited from a little more softness, I think.