Visible crew/equipment: After the main characters have entered the mall through the skylight, and have gone down the stairway in order to secure the mall, Scott Reineger and Ken Foree open the door into the corridor leading to the control room and boiler room. Whilst walking through said doorway, there is movement in the shadows in the top left. This has to be a crew member, as the only other zombie that is in this area is in the boiler room.
Trivia: Despite popular belief to the contrary, the bright-red "pastel" look of the blood effects in the film was an intentional decision by director George A. Romero. He wanted the film to have a slight "Comic-Book Aesthetic", and thus chose an extremely bright hue of fake-blood in order to better contrast with the muted-gray look of the zombies.