Auto Dark Theme [Open Source]

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I like switching between light and dark themes based on the time of day/system theme and because Unity lacks that functionality I implemented it myself:

Auto Dark Theme

Automatically sets the Unity editor theme based on the current time or system theme settings.

Supported operating systems for system-based switching:

  • Windows 10 Version 1903 and later

  • macOS Mojave (10.14.0) and later

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Download: https://assetstore.unity.com/packages/slug/180747
Source: GitHub - biosmanager/AutoDarkTheme: Automatically changes the Unity editor theme based on system settings.

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Update 1.2.0

Added macOS support and time-based theme switching.

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Now on the Asset Store: Auto Dark Theme | Utilities Tools | Unity Asset Store

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Do you really need to access the registry to do that? Isn’t there another way? Also, I guess there won’t be a Linux version?

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Observing the registry seemed like the most straight-forward way. What are your concerns with this method? I’m only reading, not writing.
I suspect calling WinRT via P/Invoke does not work because Unity Editor is not UWP.
But maybe there is indeed a better method.

You should be able to use time-based switching on Linux, although I didn’t test this yet.
To my knowledge there is no unified way to detect system light/dark themes on all various desktop environments.