When the body is uncovered at the morgue for Fallon to view, it's evident that only the actor's face is covered in grey make-up, with the makeup in the folds of his neck. The rest of his neck, shoulders and arms are normal flesh color.
When the body is uncovered at the morgue for Krystle and Blake to view, the actor at one point blinked his eyes.
Sable meets with Krystle's doctor to find out what she is being treated for. Today, in real life, that would be illegal under HIPAA.