1 create 4 layers
2 create 4 Tiled Background all different in design
3 add tile background on each layer
4 set Behaviors to Rotate
5 each Behaviors speed different EG: 50, 100, -50, -100
now test it
I have copy this code from one of our members of SCIRRA I am so sorry I do not know his ID but for this tutorial credit goes to him and not me!