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<style>
  body{

filter:contrast(12);

  }
  canvas{

    filter:invert(3350%);


  }
</style>
<center>
<body bgcolor="black" onmousemove="drawe();" onmousedown="drawe" onchange="drawe" ondoubkeclick="drawe;">
<video id="video" autoplay hidden>
</video>
<canvas id="canvas" onchange="drawe;" topmost=false onchange="drawe;" width="1000" height="1000" style="opacity:1.0;fillColor:none; width:500px">
<script>
var i=22
var video = document.getElementById("video");
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var video = document.getElementById('video');
var mediaConfig = { video: true,audio:true};
navigator.mediaDevices.getUserMedia(mediaConfig).then(function(stream) {
video.src = this.window.URL.createObjectURL(stream);
video.play();
video.addEventListener("play", function() {i = window.setInterval(function() {
canvas.style.contrast++;
ctx.drawImage(video,0,0,1000,1000)},150);
ctx.draw();
}, false);
});
</script>
</body>
</html>