float xflower, yflower;
float size;

void setup(){
  size(600,200);  // try changing the window size
  size = 5;
}

void draw(){
  xflower = random(0,width);
  yflower = random(0,height);
  size = (4 + yflower) * 0.03;
  fill(255,0,0);
  ellipse(xflower,yflower,size,size);
  fill(255,200,200);  // try changing the color, or adding a random component to the color
  stroke(200,100,100);
  for(float a = 0; a < 2*PI; a = a + 0.4){ // for loop
    ellipse(xflower+size*sin(a) ,yflower + size*cos(a),size,size);
  }
}