A small and performant particle system. For usage in for example the homepage of a website as a show off. All of the main logic is just about 650 bytes.
A demo file is provided, the main logic can be found in the logic.js file. You can cycle though multiple color presets by clicking the spacebar or the screen. The code could be embedded/inlined into an html page if you wish to do so. The location and size can easily be changed and even dynamically.