This project has a picture in mind. Click space and the program will generate a mesh of triangles and fill each with a colour that best approximates that picture. You can increase "triangle size" for a more abstract looking picture, or reduce it for a more precise result. Press SPACE after changing to see the new pic. Press A to animate. This is slow unless (even when?) run on phosphorus: http://phosphorus.github.io/#48888522
.You can even crystallize your own pictures! To do this just 1) Click "See Inside" 2) Click on the stage and add your own picture as a backdrop (backdrops->upload backdrop from file) 3) Double click 'broadcast scan" from the "scripts" tab on the stage. 4) Wait for all the little boxes to disappear. You can delete your picture from the project once they do. 5) Click "Remix". You are done! You will now have a version with your own picture in it! Uses the faster triangle filler of @TheLogFather http://scratch.mit.edu/projects/24828481/