Continuity
In one shot when Bob and Betty toast Romulus in his new suit, Bob's "z-ray" green drink is orange (though this may have been intentional, since it is unclear if the "z-rays" are simply in Romulus's mind).
When Sheila wakes Romulus to tell him he's being misled, Moira turns and pulls the bedclothes up enough to show that she's wearing blue-checkered shorts. A short while later, when Romulus is getting out of bed, Moira is obviously naked.
