People with red hair are more sensitive to thermal pain, are less sensitive to electrically induced pain, and require larger amounts of anesthetics than people without red hair due to a mutation in their melanocortin.
Surprisingly, white paint is lighter than all others, which is why most planes choose it. The weight savings allows less fuel to be consumed during the flight.
Also, white reflects the sun's rays better. This ensures that the aircraft will not overheat. Scratches, cracks, and malfunctions are easier to spot and repair on a white surface.
From a punctured stomach or intestine, water with half-digested food can leak into the abdomen, increasing the chance of peritonitis. And with head injuries, a person can choke if he or she loses consciousness while drinking.
Even in case of a large blood loss, drinking is necessary.