<iframe width='500px' height='400px' src='https://nest.ktbyte.com/nest#94601' allowfullscreen></iframe>

void setup() {
  size(500, 500);
  colorMode(HSB,150,100,100);
}
void draw() {
  background(0);
  noStroke();
  for (float i=0,a=frameCount*0.0523/3; i<150; i++) {
    fill(i,80,110,24);
    float b = TWO_PI/150*i, sz = map(sin(a+b*2), -1, 1, 40, 100);
    float y = map(sin(a+b), -1, 1, height*.2, height*.8);
    float x = map(sin(a-b), -1, 1, width*.2, width*.8);
    ellipse(x, y, sz*1.5, sz);
  }
}