Nice start
I was not expecting that much out of a cartoon that was just called "Purple" but it was better than I thought it would be. It is especially nice to see this as a forerunner for your "Textart" flash. The music was pretty good in this, too. It just shows you what you can do with nothing but a single color. The reason you made it purple was because you had to start with a color and you would have to do purple eventually, so why not do it first? Of course, you could say that about any other color.