Gomez wears an overall for the trip to the moon. But when he is shown in close-up various times, he is wearing his regular clothes.
The jacket of the crook selling fake Moon Rocks goes from green to white to green again.
When Bothan and Gripe are selling moon rocks, during Bothan's close-up as he says "Well, we're doing it, aren't we?", the edge of his animation cel is visible and his body is not drawn beyond the left shoulder.