SketchBook

function setup() {createCanvas(700,700);}
function draw() {
frameRate(50);
background(random(0,255),random(0,255),random(0,255));
rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));

rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));this

rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));this

rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));this

rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));this

rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));this

rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));this

rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));this
this
rect(random(0,700),random(0,700),random(0,700),random(0,700));
fill(random(0,255),random(0.255),random(0,255),random(0,100));
}