Cute
Count the number of manipulations this robot can perform! Simple, effective, and robust. My guess is that it is hard to distinguish orange and red and since they are opposing colors (on the original Rubric cube that is), it is probably impossible to calculate which are red and which are orange. Hence the orange stickers have been removed (sacrilege!) a true hacker would hack the NXT light cell. 
(conformation here)
(source: Hacked Gadgets)