Brion Gysin
Brion Gysin's dream machine inspired web page. Try playing with / adjusting the time interval of the changeColor() function.
Also, epileptic people please be careful with this!
Epilepsy Society UK says between 3-30 hertz is the common range to trigger seizures. The default setting for this "app" is at 130 milliseconds which corresponds to around 7 hertz, so please be careful with this