app/assets/images/flags/4x3/jm.svg
<svg xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-jm" viewBox="0 0 640 480">
<g fill-rule="evenodd">
<path d="M0 0l320 240L0 480zm640 0L320 240l320 240z"/>
<path fill="#090" d="M0 0l320 240L640 0zm0 480l320-240 320 240z"/>
<path fill="#fc0" d="M640 0h-59.6L0 435.3V480h59.6L640 44.7z"/>
<path fill="#fc0" d="M0 0v44.7L580.4 480H640v-44.7L59.6 0z"/>
</g>
</svg>