I think panel 1 is one of the first times I started playing with color holds, coloring some of the black line art with a color other than pure black (in this case, a lighter gray). I’m using this technique a lot more, especially in the new (and full-color!) Big Snow Job story arc, as I find it to be a nice subtle way of adding dimension. This panel particularly would have been a mess of foreground and background without it, but with the color hold, the background city gets pushed back, emphasizing the platform and hopper in the foreground much more clearly.