Thanks. Not sure why some appear to move (or pulsate) faster. Maybe color contrast. I have found viewing distance and screen size & res also affects perception a lot.

Was thinking of allowing the user to control the movement (on mobile) using the accelerometer, to try and get a bit closer to the original kinetic intent.

Exporting to gif or mp4 would be nice, too... but haven't found a JS SVG renderer that supports animation.

polymeris: cooool!