Check for updates (be sure your prefs are set for test builds). Or download the latest build.
Changes since 6.1b2:
- Two new themes: Hyperlegible and NewsFax
- Change in how built-in themes work: they’re part of the app bundle and they’re not copied into the Themes folder. When a built-in theme changes in a new app release, anyone using that new version gets the changes to the built-in theme