Atomic

color colors[];

int count = 17;

void setup() {

  size(600,600);

  ellipseMode(CENTER);

  background(0);

  colors = new color[2*count];

  colorMode(HSB,3400);

  for(int i=0; i<colors.length;i++){

    colors[i] = color(100*i,3400,3400);

  }

}

​

void draw() {

  fill(0,0,0,80);

  rect(0,0,width,height);

  translate(width/2, height/2);

  for (int i = 0; i<count;i++) {

    rotate(PI/count);

    noFill();

    stroke(colors[i]);

    noStroke();

    fill(colors[i]);

    float a = map((millis()+1000*i)%(count*400), 0, (count*400), 0, TWO_PI);

    ellipse(75*cos(a), 250*sin(a), 20, 20);

    fill(colors[i+17]);

    ellipse(75*cos(a+PI), 250*sin(a+PI), 20, 20);

  }

}

​