what is redcubescene bluecubescene?

I see from Tuscany demo redcubescene and bluecubescene. And what is the difference of these from main scene?
I'd appreciate the answer.

Scene MainScene;
Scene LoadingScene;
Scene SmallGreenCube;

Scene OculusCubesScene;
Scene RedCubesScene;
Scene BlueCubesScene;

Thanks,