TPNGImage help

Returns a palette item value.

type TRGBQUAD = packed record
  rgbBlue: Byte;
  rgbGreen: Byte;
  rgbRed: Byte;
  rgbReserved: Byte;
end;
property Item[Index: Byte]: TRGBQuad;

Description
This property is read-only and will return a palette item. The index can be from 0 to count - 1.