Psychedelic rubik's cube

One cube filled with smaller ones (3 different colors). Holes left inside it. Each cube can move freely (and randomly) inside the box.

Now let's add some colors and cube rotation:

Python script can be found here: https://drive.google.com/file/d/0B2BWubg0Qrg4ZlRLd012eUd5Skk/edit?usp=sharing