In the end, Luigi's pancake stack is taller in the next shot. There's also syrup as well. The previous shot didn't have any syrup showing.
The golden box is blue when Toad and the Princess enter the secret chamber for the P wings. Then the box changes to gold in the next shot when the Princess opens the box.
Throughout the episode, the Raiser-Upper changes colors from brown to pink.
When Koopa is using the gravity machine to suck up the Mushroom Kingdom, Kookie's head is blue instead of green.