int x,y;
void setup()
{
  size(300,300);
  colorMode(RGB,100);
  background(100);
  noStroke();
  frameRate(10);
}

void draw()
{
  {
    fill(random(100),random(100),random(100));
    
    float x=random(300);
    float y=random(300);
    ellipse(x,y,50,50);
  }
}