Hi, I searched the forum for this topic, but I couldn't see any, maybe no one uses this option.
In Operation Flashpoint the player could assign a color to some members of his squad with the key combination 9-9-1...5 and this colored section of the squad could be recalled by simply keying 9-1...5. This way the player could select some members of his squad very fast, it was a great idea!
In Armed Assault the player can issue a color with the key combination 9-1...5, but the recall combination is missing!
I suspect someone missed a "9" in the "assign" key combination during the game programming.