<prompt> Brown color of contusion is due to:BiliverdinReduced hemoglobinHemosiderinBilirubin  <response>: Color Pigment Time Duration Red Oxy hemoglobin Fresh Blue Deoxy hemoglobin Few hours - 3 days Brown Hemosiderin 4 -5 days Green Biliverdin hematoidin 6 -7 days Yellow Bilirubin 7 - 14 days 