At the end of the "Purple" music video, Vincent can be seen trying to make finishing touches to the painting, yet when he turns around, he isn't holding a paintbrush at all.
If you look carefully at the transition from the Deluxe F1 Level 5 Ramp Racer to the purple puppet show in the 2004 version, you can see a little bit of the Level 4 Ramp Racer from its original release.
There's a green screen error in the Mid and Late 2000-2003 versions in Baby Van Gogh in Vincent's Paint Accident scene, His green spots are gone and was transparent to the actual background, But Disney fixed it in 2004 and 2010 Discovery Kit versions, This is one of the few times where Disney fixes a mistake for later releases.
If you look closely when Vincent Van Goat is finished painting in the Orange segment, You can see a bug crawling up Vincent's back.
In the Purple puppet show where Vincent meets Vivian Van Goat, If you look closely as Vincent says "Ooh la la!" Markie Scholz's head can be visible above the purple bar.
Plus Vincent's puppeteer Markie Scholz's hand can be briefly visible at the end of the "Purple" music video.
In the orange puppet show when Baby Bach the Bunny in a dual role leaves in a white backdrop the puppeteer Markie Scholz's sleeve can be seen briefly.
During the "Red" music video when Morris Moose dances in a triple role in a white backdrop Morris on the left sides puppeteer Markie Scholz's sleeve can be seen.