Continuity mistake: The package Steve received from Mailbox is briefly visible before Mailbox comes in. You can also see a crew member's hand holding the package as Steve grabs it.
Blue's Clues (1996)
1 continuity mistake in Magenta Comes Over
Starring: Aleisha Allen, Steve Burns, Seth O'Hickory, Traci Paige Johnson
Continuity mistake: When Steve sings the Blue's Clues theme, he is wearing tan shoes he wore in few other episodes. When he drops his notebook after the theme, he is back in his brown shoes.
What Story Does Blue Want to Play? - S1-E16
Trivia: At the end when Steve sings the So Long song, he's impersonating Elvis Presley.