<prompt> Blue colour of bruise is due toHemosiderinDeoxyhemoglobinBilirubinHematoidin  <response>: Age of contusion Time since injury Color change First day redHb 2-3 days bluedeoxyHb 4-5 days bluish blackbrownhemosiderin 5-6 days greenishhematoidin 7-10 days yellowbilirubin By 14 days normal Ref: FORENSIC MEDICINE AND TOXICOLOGY DR PC IGNATIUS THIRD EDITION PAGE 118 