TImage32.AdjustSaturation

procedure AdjustSaturation(percent: Integer);


percent range: -100 .. 100

uses Image32, Image32_PNG;
...
img := TImage32.Create;
img.LoadFromFile('beetle.png');
img.AdjustSaturation(-60);
img.SaveToFile('beetle_hue.png');
img.Free;
      
Before:
After: