godot/editor/icons/ColorRect.svg

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="#8eef97" d="M1 1v14h14V1zm2 2h10v10H3z"/><path fill="#45d7ff" d="M12 12H7.2L12 7.2z"/><path fill="#ff4545" d="M4 4h4.8L4 8.8z"/><path fill="#80ff45" d="M4 12V8.8L8.8 4H12v3.2L7.2 12z"/></svg>