My Four Color a Dinosaur publication has some pretty glaring mistakes, which people noticed after it got published, and Randomno is working to fix. Feel free to not believe me, but I did notice some of those mistakes back in April, and was working on a movie to address them. I noticed the toenail thing on #1 and the eye thing on #2, but #5 and #13 slipped by me a second time. Apparently I had some hot takes on #6, #7, and #16. Get out your Voronoi diagrams...
Compared to Randomno's submission, my #1 is 8 frames faster, and my #2 is 34 frames faster. I'll see if I can't work your fix into my improvements to #5; your #13 will be spliceable.
Here is my original notes draft file:
Stego (1)
I realized one of the toenails, which I considered to be at a corner with another, might actually be a proper adjacency. I went and recolored it ugly, and in the process, I saved 4 frames.
I sacrificed 2 frames to show the eyes.
Future note: Apparently I saved another 4 frames by doing pink first.
Spino (2)
I actually bothered to redo this with the yellow spots routed into the main yellow pass. 16 frames.
Then I realized I left both the eyes pink. How embarassing! I also realized I could color that nostril pink, saving some frames. This actually saved another 7 frames.
Tricera (5)
I managed to combine more long waits with long movements. 16 frames.
Vinny (6)
It's always vague with these large outlined regions, but I realized Vinny's right pupil could probably be considered touching his yellow body. I changed it to purple, which saved me 5 frames. Not only from avoiding the fill, but from avoiding a slight backtrack to reach it as well. I sacrificed 2 frames so you could actually see this.
Future note: I can't help but wonder why I decided to color it yellow in the first place...
Ptero (7)
I realized that little leg...socket...thing could be yellow, since it touches the body at a corner. 15 frames
Proto (16)
I changed my mind about that last splotch. It's only a corner, so I saved 106 frames for free.
Total = 169 (not incl. time/ent tradeoffs)
On Corners
Having seen all these drawings, you might think it's a little cheesey that the corners are allowed to be the same color. Well, that's just the way the theorem works. I believe the stego would be impossible if corners counted, but to really drive this point home, consider this dinosaur:
It's got 8 wedges all touching in the center, so you'd need eight colors. You could slice it into as many wedges as you want and there'd be no bound on the number of colors required. So yeah.