This sketch is created with an older version of Processing,
and doesn't work on browsers anymore.
xxxxxxxxxx
size (500,500);
background (random (255), random (255), random (255));
smooth ();
//small circles
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 30, 30);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 30, 30);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 30, 30);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 30, 30);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 30, 30);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 30, 30);
//med circles
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 60, 60);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 60, 60);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 60, 60);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 60, 60);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 60, 60);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 60, 60);
//large circles
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 90, 90);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 90, 90);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 90, 90);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 90, 90);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 90, 90);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 90, 90);
//xl circles
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 150, 150);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 150, 150);
fill (random (255), random (255), random (255));
ellipse (random (width), random (height), 150, 150);