Light Blue Logo

Light Blue Logo

White Logo

White Logo

Below is this script for pages with dark background or image headers. Copy and past into the Page Settings > Advanced > Code Injection

<script>
   window.onload = function() {
     document.getElementsByClassName('Header-branding-logo')[0].src = 'https://static1.squarespace.com/static/59823162c534a526009bc85e/t/59890bad15d5db43f25a6377/1502153654741/?format=750w';  
   };
 </script>