Color record for 64 bit images, which allows access to individual color channels.

public TColor64Rec = packed record
  case LongInt of
    0: (Color: TColor64;);
    1: (A: Word;
        B: Word;
        G: Word;
        R: Word;);
    2: (Channels: array[0..3] of Word);
        Color48Rec: TColor48Rec;);
  end;

ImagingTypes (at line 288)