blendMode problems

Use this code:

var angle = 1;
function setup() {
createCanvas(800,800);
}

function draw() {
  createCanvas(800,800);
  background(255);
  translate(300,300);
  rotate(radians(angle));
  noStroke();
  scale(2);
  blendMode(MULTIPLY);
  fill(255,0,0);
  ellipse(30,30,60,60);
  fill(0,255,0);
  ellipse(60,60,60,60);
  fill(0,0,255);
  ellipse(60,30,60,60);
  angle++;
}

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