code-dot-org/blockly — pull request #626 by Bjvanminnen (2014-05-29 21:15:35+00:00)
Title: first level of k1 flappy should have gray blocks that cant be moved or deleted

![image](https://cloud.githubusercontent.com/assets/1767466/3123798/5a7b5096-e776-11e3-95a6-2c2788fcbc15.png)