<prompt> Red brown post moem staining is seen in -DhaturaAnilineCONitrites  <response>: Poison Color Nitrites Reddish brown Potassium chlorate Chocolate brown Phosphorus Dark brown Hydrogen sulphide Bluish green Cyanide Cherry red Carbon monoxide Pink Opium Blackish Ref: K.S.Narayan Reddys Synopsis of Forensic Medicine and Toxicology , 29th edition. 