Color record for 32 bit images, which allows access to individual color channels.

public TColor32Rec = packed record
  case LongInt of
    0: (Color: TColor32;);
    1: (A: Byte;
        B: Byte;
        G: Byte;
        R: Byte;);
    2: (Channels: array[0..3] of Byte);
        Color24Rec: TColor24Rec;);
  end;

ImagingTypes (at line 264)