Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Paper.js</title>
<link rel="stylesheet" href="./../PaperJSEngine/style.css" />
<script type="text/javascript" src="./../PaperJSEngine/paper-full.min.js"></script>
<script type="text/paperscript" canvas="canvas">
var circle1 = new Path.Circle({
center: view.center,
radius: 150,
shadowColor: 'blue',
shadowBlur: 80,
fillColor: 'white',
blendMode: 'multiply',
})
//Multiply to blend fill color with shadow
</script>
</head>
<body>
<canvas hidpi="off" id="canvas" resize style="background: "></canvas>
</body>
</html>