sketch_random_blendmode.js

let blendmodeArr;

function setup() {
  createCanvas(800, 800);
  colorMode(HSB, 360, 100, 100, 100);

  blendmodeArr = [BLEND, //ADD, DARKEST, LIGHTEST, 
    // DIFFERENCE,
    EXCLUSION, MULTIPLY,
    //SCREEN, REPLACE,
    // REMOVE, 
    //OVERLAY, HARD_LIGHT, SOFT_LIGHT,
    DODGE, BURN,
    //SUBTRACT
  ];
}

function draw() {
  // blendMode(BLEND);
  // background(0, 0, random(100));
  for (let i = 0; i < 1000; i++) {
    blendMode(random(blendmodeArr));
    fill(random(360), random(100), random(100));
    noStroke();
    let x = random(width);
    let y = random(height);
    let d = random(300);
    ellipse(x, y, d);
  }
  noLoop();
}