Thanks to arch292 for these fixes. This version has fixes to the "Change themes based on the system theme" setting. The technical details include that it substitute "auto" system theme for built in Light/Dark.

- Fixed the " Change themes based on the system theme" mode. Big thanks to Eason Wong (https://github.com/easonwong-de) for this!
- Modify so that prefers-color-scheme only follows the system theme while in "change theme based on system theme" mode. Otherwise, we use the value from the theme.
- Modify Options page background to change based on prefers-color-scheme value, rather than whether the add-on is in daytime or nighttime mode. The logo still reflects whether the add-on is in daytime or nighttime mode.

- New permission required: browserSettings - Required as of Firefox 95 to set layout.css.prefers-color-scheme.content-override about:config setting and to properly detect when device theme is changed
- Open settings page automatically when extension is installed
- Fix system-theme mode to properly change upon device theme change
- Hide debugging output under a "Debug mode" flag
- Modify logo and Options page theme to change as soon as the extension switches between nighttime mode and daytime mode

Special thanks to ayushhroyy and Juraj-Masiar for their help on this release.
And thanks as always to everyone who reached out on Github and via email with their feedback/suggestions!

- Add dynamic logo to Options page showing if day/night/off theme is being used
- Add dark header bar to Options page

Bugfixes related to previous release (1.2.0)

- As per popular request, you can now change the theme based on your OS system theme.
- Note that due to this change, if you previously chose to set themes automatically based on your location, you may need to choose the setting again.
- For any feedback or bugs with this feature, let me know at https://github.com/skhzhang/time-based-themes/issues or via email. Please include your version of Firefox and your OS.

- Also: new messages and cleanup to the Options page.
- Discontinue support for Firefox for Android (Fenix is coming!)

Minor bugfix when initially setting addon to automatically change based on geolocation

- Automatically calculate sunrise/sunset based on your location. (Requires geolocation permission when turning on the setting in the Options page.)
- Dark theme for the Options page when using Firefox's default dark theme.
- Add About section in the Options page.

Incorporated fixes to a bug where the times are offset. Thanks @abaco!

If you continue to experience this bug, please let me know at: https://github.com/skhzhang/time-based-themes/issues/5

- New permission required: usage of storage API. NOTE: This will require you to add your settings again. However, this should be more reliable than the previous and should never be cleared, unless uninstalling/removing the addon (or resetting settings).
- The addon no longer checks the time on an interval! Instead, it will set a timer for the specified sunrise/sunset time and will change the theme then.
- Modifying any setting will change the theme if appropriate. Thus, the 'manually check time' button has been removed.
- Code cleanup to make future maintenance easier. :)

- Cosmetic update: Changing add-on name!

- Add confirmation dialog to 'Reset to default settings' button.
- Add setting to only check time on startup.
- Remove unnecessary 'theme' permission.
- Clean up 'Options' page.
- Other miscellaneous fixes. Please see https://github.com/skhzhang/time-based-themes for details.

- Remove unnecessary permission.
- Small clean-up (remove console output).