Hi there,

This is Byron from the Customer.io technical support team. Great question! We have a feature request open with our product team requesting a feature to easily set dark/light mode on in-app messages, so I’ve added your “vote” with a link back to this post so the team knows this would be a useful feature for you.

In the meantime, if you’re familiar enough with editing code and CSS, there is a workaround you can try to implement on your in-app messages using our new visual editor. I’ll share a quick snippet below that can help you get started

 <x-head>
    <style>
      @media (prefers-color-scheme: dark) {
        div{
          background:#000;
          color:#fff
        }
      }
    </style>
  </x-head>