<prompt> Differentiating features of contusion Vs postmortem staining are -a Bluish in colorb Disappear with pressure on areac Margin irregulard Limited to intravascular compartmente Extravasation of blood occursabcbecebcd  <response>: The colour of bruise changes as per stage of healing seen whereas postmortem lividity as bluish-pink to bluish purple.There is no effect of pressure on a bruiseMargins of a bruise are irregular and diffuse into surrounding margins of postmortem lividity are clear-cut. In bruise, blood is into the extravascular compartment it is in an intravascular compartment in postmortem lividity.Extravasation of blood occurs in a bruise. 