@Dill660 It's due to a glitch in the software. After 6 hours of recording, it ceases to record and will not playback the drawing on 3DS's but you can view up until the 6 hour mark on the Colors! 3D website.
@Dill660: I don't understand why it matters if it's traced?? The actual work on the color and 3D effect is AMAZING and I think that's what this guy was actually trying to focus on. I have seen a whole bunch of traced artwork on this thing and most of it sucks. Anyone can trace but not anyone can use color the way it's used here.