The Angry Red Planet (1959)

Continuity mistake: When the MR-1 first lands on Mars, the sky visible through the portholes is fiery red, which is the uniform color of all exterior shots in the film. However, a whole series of interior shots throughout the film show that the sky visible through the portholes is suddenly and inexplicably baby blue. At two points, when Iris sees a Martian through the porthole, the sky momentarily turns pitch black.

Charles Austin Miller

CWO Sam Jacobs: So Oola ran screaming across the burning Martian sands as the monster Ongolur relentlessly pursued her, its five arms reaching hungrily for her.