I didn't invest much time into a good user interface or backward compatibility, so the way to select one of the different visuals is to check out the respective git commit, and the way to customize it is to change the code ;). Early commits in the git history deal with different stuff entirely, such as a rainbow swirl or a pretty proton/electron simulation. Some interesting commits are marked with their own git branch.
You don't need to run any code to see the visualizations though, here are some teasers. Click on the image to start a video or enlarge the thumbnail.
- May trigger seizures
- Large files of up to 150MB
- Some videos have sound