YAquaBubbles is a QuartzComposer Screensaver. It was one of my first try but the result was nice.
➥ YAquaBubbles.dmg
DdzFFzCqrhtAvdkmATx5Fm8NPJViDy85ZBw13p4XcNzVzvQg8e3vWLXq23JQWFxPEXK6Kvhaxxe7oJt4VMYHxpA2vtCFiP8fziohN6Yp