On pages 16 and 17 of the sketchbook, I was working out some ideas for a new look for Donatello, including some more pockets and pouches for his various bits of tech gear, as well as headgear which presumably would incorporate some vision-enhancing gizmos.
Sorry about the quality of the page with the blue pencil sketches -- I tried to tweak them in Photoshop as I'd done with other pages previously, but for some reason I couldn't get a clean selection of the blue pencil areas, possibly because the photo was a bit blurry. And I don't know what that yellow-brown arc is in the middle of the page -- it certainly isn't part of the drawing. It almost has the look of the residue that might be left if part of a rubber band had been squished between the pages and left there for a long time. Who knows? -- PL