Answer to Question 1
Poisoning
Rationale: Poisoning may cause a gray or brown tinge to the skin. Vitiligo is white patches on the skin. Addison's disease may cause a bronze skin color. Cyanosis causes a bluing of the skin.
Answer to Question 2
libel
Rationale: Slander is defamation by the spoken word; invasion of privacy and fraud are unrelated distractors.