int W=400,w;
 float r,X,Y,m,N;
 void setup(){
 size(W,W);
 background(#75796A);
 frameRate(.5);
  noStroke();

 }
 void draw(){
   smooth();
  filter(11); 
  w=W/(int)random(1,W);
  D(w,w,5,12);
}
void D(float x,float y,int d,int l){ 
  m=millis();
  N=random(1,15);
  for(int i=0;i<N;i++) {
  fill(0,10);
  ellipse((x+1)+(W/w),(y+1)+(W/w),d+(N+i),d+(N+i));
  fill(m/(N+w),m/(N*w),N+w,w+i);
  ellipse(x+(W/w),y+(W/w),d+(N+i),d+(N+i));
  if(l>1){
  l=l-1;
  r+=w;
  X=x+sin(r)*5.0*l;
  Y=y+cos(r)*5.0*l;
  D(X,Y,d,l);
    }
  }
}

void keyPressed(){
  save ("img.png");
}