<prompt> The brown colour of the contusion is true is due toHemosiderinReduced hemoglobinHematoidinBilirubin  <response>: The synopsis for forensic medicine toxicology Dr .ks.narayan reddy, 28th edition, Pg no. 108 Colour of the bruise indicates the age of a bruise, the colour change is due to the breaking down of hemoglobin into hemosiderin, haematoidin and bilirubin by the action of enzymes. At first: red Few hours to 3 days: blue 4th day: bluish black to brown hemosiderin 5-6th day: greenish haematoidin 7-12th day: yellow bilirubin 2 weeks: normal 