In "Tick Tock Smurfs" Greedy's house changes color scheme in each of its three appearances over the course of the episode.
In "Tick Tock Smurfs", while waiting for Handy to unveil his new Time Smurfer, the white of Painter's pants reaches up to behind his bow tie.
In "Tick Tock Smurfs" when Papa Smurf gets Baby swiped from him by Handy, one of his ears turns white.
In "Tick Tock Smurfs" in the closer shot of Vanity holding Baby while Painter paints the two, Baby is abnormally big in comparison.