Originally Posted by Mystic
The logic behind the separation of 'Blue' and 'Gold' for the X-Men was that each one held a different purpose. The Blue team (Cyclops, Wolverine, Psylocke, Beast, Gambit, and Rogue) was geared more towards physical and covert operations. The Gold team (Storm, Jean Grey, Archangel, Iceman, Colossus, Bishop, Professor X) was more of a 'power house' containing the more powerful members of the team.
...At least that's what the descriptions on the back of their trading cards said (X-Men Series 2).
-Mystic