There is a new theme available in Moodle 3.2 called Boost.
MoodleCloud sites created prior to this release will not have this theme selected by default.
To switch over to this theme, follow these steps:
1. Login to your site as the admin user
2. Goto the Administration block
3. Navigate to Site Administration>Appearance>Themes>Theme selector
4. Click the “Use theme” button for the Boost theme
Your site will now be using the Boost theme.
Visit your Frontpage to get the Boost user tour, this will help you get started using the new theme.