Stars following mouse.

HTML 
<canvas id="canvas">No HTML5 canvas support.</canvas>

CSS
body {
  overflow: hidden;
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/167451/1797393.png) no-repeat center center fixed;
  background-size: cover;
  text-align: center;
}

JS
(function() {
  console.clear();
  var stage = new PIXI.Stage();
  var renderer = PIXI.autoDetectRecommendedRenderer(window.innerWidth, window.innerHeight, {view: document.getElementById("canvas"), transparent: true}
  );
  
  var starTexture = PIXI.Texture.fromImage("https://s3-us-west-2.amazonaws.com/s.cdpn.io/167451/Feedbin-Icon-star.svg");
  
  var colours = [
    0x3498db,  // Blue
    0x9b59b6,  // Purple
    //0xf1c40f,  // Yellow
    //0xd35400,  // Orange
    0xfA2323   // Red
  ];
  
  var starPool = [];
  var starsInUse = [];
  for (var i=0; i<100; i++) {
    var star = new PIXI.Sprite(starTexture);
    star.anchor.x = star.anchor.y = 0.5;
    star.visible = false;
    star.scaleDecay = 0;
    star.alphaDecay = 0;
    star.speed = 0;
    star.velocity = {
      x: 0,
      y: 0
    };
    starPool[i] = star;
    stage.addChild(star);
  }
  
  var spawn = function(x, y) {
    var star = starPool.splice(0, 1)[0];
    star.tint = colours[Math.floor(Math.random() * colours.length)];
    star.scale.x = star.scale.y = (Math.random() * 0.8) + 0.2;
    star.scaleDecay = (Math.random() * 0.05) + 0.05;
    star.alpha = (Math.random() * 0.2) + 0.8;
    star.alphaDecay = (Math.random() * 2) + 1;
    star.rotation = 2 * Math.random() * Math.PI;
    star.x = Math.cos(star.rotation) * 10 + x;
    star.y = Math.sin(star.rotation) * 10 + y;
    star.speed = (Math.random() * 30) + 20;
    star.velocity.x = star.speed * Math.cos(star.rotation);
    star.velocity.y = star.speed * Math.sin(star.rotation);
    star.visible = true;
    starsInUse.push(star);
  };
  
  var updateStars = function(delta) {
    for (var i=0; i<starsInUse.length; i++) {
      var star = starsInUse[i];
      if (star.visible) {
        star.alpha -= star.alphaDecay * delta;
        star.scale.x -= star.scaleDecay * delta;
        star.scale.y -= star.scaleDecay * delta;
        star.x += star.velocity.x * delta;
        star.y += star.velocity.y * delta;
        
        if (star.alpha < 0 || star.scale.x < 0) {
          star.visible = false;
          starPool.push(starsInUse.splice(i, 1)[0]);
        }
      }
    }
  };

  var lastTime = null;
  var animate = function(timestamp) {
    if (lastTime === null) {
      lastTime = timestamp;
    }
    var delta = (timestamp - lastTime) / 1000;
    lastTime = timestamp;
    
    for (var i=0; i<Math.min(starPool.length, 5); i++) {
      var pos = stage.interactionManager.mouse.global;
      spawn(pos.x, pos.y);      
    }
    updateStars(delta);
    
    renderer.render(stage);
    
    requestAnimationFrame(animate);
  };
  
  requestAnimationFrame(animate);
})();