Please note: this feature is in Private Preview at the moment, which means we're still making a few tweaks here and there to make it even better. It also means that while only Early Adopter customers can get access to it right now, when it's out of Private Preview it will be available to all customers, but may be restricted to certain subscriptions.
You can override certain styles by adding your own CSS. The layouts are built off Twitter Bootstrap to give you a better understanding of how to override designs.
Step 1: Navigate to Tracking Tab
First, head to the Launch page and go to the Tracking tab.
Step 2: Add your Custom CSS
In the Head Tag, add your custom CSS that is wrapped in a <script></script> tag. You may also need to use a !important flag to override styles.