title: How to create a polyline on google map like the line showing in the image
body: <p><a href="https://i.stack.imgur.com/wjGL9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wjGL9.png" alt="enter image description here"></a></p>
  
  <p>I need to create a polyline that have shadow and elevation as well. Also i need to provide multiple colors to the line. Please suggest. </p>