<prompt> Brown color of contusion is true is due to -HaematodinReduced hemoglobinHaemosiderinBilirubin  <response>: the synopsis for forensic medicine toxicology . Dr .ks.narayan reddy ,28th edition . Pg no . 108 Colour of the bruise indicates the age of bruise ,the colour change is due to the breaking down of haemoglobin into haemosiderin ,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 