Should you happen to be in the mood to track down a memory corruption bug (?). (Not urgent, just weird.)
1. Restart Realtalk and put down page 41472. You should see a solid yellow animated shape. (The red in the photo is just a photo artifact.)
2. Put down an appearance recognizer, then put it away.
3. The yellow shape has turned into yellow glitch art, filling the bounding box of the shape. This only happens with fill, not stroke.