Toggle Theme
Cygnus ships with a Light theme and a Dark theme. Switching between them repaints the whole interface immediately, including the window icon and the sun and moon theme switch itself, so you can match the application to your room or reduce eye strain during a long session.
Your choice is saved and restored the next time you start Cygnus.

Switch Between the Light and Dark Themes
To change the theme:
- Click View → Toggle Theme on the menu bar.

tip
The sun and moon theme switch at the top right of the status area does the same thing in a single click, without opening a menu.