This is a result of the compression method which you used when saving the movie. From within Starry Night, choose Preferences from the File menu (Windows) or the Starry Night menu (Macintosh) and select QuickTime from the dropbox on the upper left. Click on the "Quicktime Movie Preferences" button. The "Compression Setting" window which opens allows you to modify the compression settings. The top dropbox in this window is the compression method. If you saw distorted colors in the movies you made, try changing the compression method. "Sorenson Video 3" is a good compressor which usually doesn't distort the original images noticeably. Also make sure that the "Quality" slider in the "Compression Settings" window is all the way to the right.