Ejercicios de processing

void setup() {
  size (400,300);
  background (255);
}
void draw () {
  smooth();
  stroke (0);
  fill (150,59,89);
  ellipseMode (CENTER);
  ellipse (mouseX, mouseY, 40,40);
  fill (700,10,9);
  ellipse ((random(mouseX)),(random(mouseY)),60,60);
  fill(148,248,538);
  ellipse((random(mouseX)),(random(mouseY)),30,30);
}

void setup() {
  size (400,320);
  background (0);
}
void draw () {
  strokeWeight (2);
  smooth ();
  fill (54,65,89); // Low opacity
 rectMode (CENTER);
  rect ((random(mouseX)),(random(mouseY)),10,10);
  fill (255); //Low opacity 
  ellipse ((random(400)),(random(320)),50,50);
}

void setup() {
size(400, 300);
background(0);
}
void draw () {
smooth();
noStroke();
fill(255, 48);
translate(20, 50); // Set initial offset
for (int i = 0; i < 12; i++)  // 12 repetitions
scale(1.2); // Accumulate the scaling
ellipse((random(250)),(random(300)),10,10);
}