About the 5FC versions: The 5FC (5 Fingers Colored) version code is used only in melodic passages. The notes are colored to identify individual 5-finger melodic groups. The colors themselves have no meaning. The CHANGE in color is the code. All notes with a single color belong to the same 5 finger position. The changes of color signal in advance when a hand position is to be moved. Whenever the hand moves out of a 5 finger position,  the next note will be either of another color it will be white. White notes simply are not in a 5 finger position. To understand this fully, see the 5FC examples below.