I finally found out what they use to paint animation cels today. I picked up two bottles of Flashe, one white and one Prussian Blue (They didn't have any black Flashe...) - I'm going to see how it looks painted on my Dura-lar sheets. If I can get that animation cel look, I'll be pleased as punch.
Today was another Figure Drawing day at the Lansdowne Art space, so the last 20 figures of my set were done from life rather than from video. Onward!