app/javascript/react/assets/icons/markers/marker-cluster-yellow.svg
<?xml version="1.0" encoding="UTF-8"?>
<svg width="29px" height="29px" viewBox="0 0 29 29" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<!-- Generator: Sketch 53.2 (72643) - https://sketchapp.com -->
<title>Slice 1</title>
<desc>Created with Sketch.</desc>
<g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
<g id="Colors/yellow" transform="translate(8.000000, 8.000000)" fill="#ffd960">
<rect id="Rectangle" x="0" y="0" width="13" height="13" rx="6.5"></rect>
</g>
<circle id="Oval-3" stroke="#ffd960" cx="14.5" cy="14.5" r="13.5"></circle>
</g>
</svg>