<prompt> Brown colour of contusion is due toHematoidinReduced haemoglobinHemosiderinBilrubin  <response>: age of contusion Time since injury Color change First day redhemoglobin 2-3 days blue deoxyHb 4-5 days bluish blackbrownhemosiderin 5-6 days greenishhematoidin 7-10days yellowbilirubin By 14 days normal ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 118 