SketchBook

function setup() {
createCanvas(windowWidth,
windowHeight);
background(50, 0, 40);
}

function draw() {
var from = color(0, 10, 200, 50);
var to = color(320, 90, 65, 20);

fill(lerpColor(from, to, random(10.8)));
ellipse(random(width), random(height), 90, 90);
}