In one of the more recent cut scene videos from Tron Evolution, we hear a woman talking about relationships between Isos and Basics, and I'm pretty sure she's talking about the programs clad in black and the programs clad in white!
I have not been able to find much about this, but I apologize if this has already been brought up in another thread. I think its pretty awesome that its not just an aesthetic thing - that the color difference actually means something about the programs.
The only thing I've been able to find so far has been here
http://www.guardian.co.uk/technology/gamesblog/2010/aug/19/tron-evolution-hands-on-gamescom, where it says that the game focuses on Isos which are sentient programs that don't belong to a user.
Let us discuss!