Shift has three options for themes: Light Mode, Dark Mode, or Automatic Theme Detection.
How to Change your Theme in Shift
1. Right-click on your sidebar and choose either "Light Theme", "Dark Theme", or "Auto Theme" on the menu.
1. Click on the Options menu in the bottom left.
2. Go to Settings (the wrench icon).
3. Click on General.
4. Click on Appearance.
5. Look for the "Theme" setting.
6. Change to Light, Dark, or Auto depending on your preference.