test1/images/dark/icon-add.svg

<?xml version="1.0" encoding="utf-8"?>
<svg width="16" height="22" version="1.1" xmlns="http://www.w3.org/2000/svg">
    <rect fill="#C5C5C5" x="6.5" y="5.5" width="3" height="11"/>
    <rect fill="#C5C5C5" x="2.5" y="9.5" width="11" height="3"/>
</svg>