The video below shows an animated score of Beethoven’s 5th, and you can use this chart that explains what the colors in the score mean. Essentially each color represents a particular instrument. Get the chart here,
and Debussy's Claire de la Lune:
Here is the playlist for music by Bach:
Go to the YouTube page (with links to all 63 videos of all kinds of music): http://www.youtube.com/user/smalin and the Musical Animation Machine's web page is here: http://www.musanim.com/. You can read an interview with Stephen Malinowski here.