Once you've chosen your template, you can customize it further by changing the colors by going clicking on the "Site Settings" button above the site builder.

Each template will have a couple of different variations to choose from, but you can also change the text, accent, and background colors for each template. 

You can also delete/add your own sections, create different pages, and add your own header image or custom calligraphy. 

If you ever want to change your template, you can do so at any time. Here's how you can switch templates.