Intent to Extend Experiment: Dark mode support for web apps

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Louise Brett

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May 2, 2022, 1:07:39 AMMay 2
to blin...@chromium.org, Glen Robertson

Contact emails

loub...@google.comgle...@chromium.orgmgi...@chromium.org

Explainer

https://github.com/WICG/manifest-incubations/blob/gh-pages/user-preferences-explainer.md

Specification



Summary

Add a field to the web app manifest which allows apps to specify a different theme color and background color for dark mode.



Blink component

Blink>AppManifest

TAG review

https://github.com/w3ctag/design-reviews/issues/696

TAG review status

Pending

Risks



Interoperability and Compatibility

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?



Goals for experimentation

Allow web developers to use this field and provide feedback.



Reason this experiment is being extended

The manifest format is changing slightly based on feedback from the TAG review. Requesting to extend to M104, which would make this a 6 milestone trial overall.



Ongoing technical constraints



Debuggability

chrome://web-app-internals can be used for debugging, and this has been added to the DevTools Application pane.



Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?

No

Not supported on Android



Is this feature fully tested by web-platform-tests?

No

Flag name

chrome://flags/#enable-experimental-web-platform-features

Requires code in //chrome?

True

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1271804

Launch bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1279284

Estimated milestones

OriginTrial desktop last102
OriginTrial desktop first99
Requesting to extend to 104.


Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5714780426862592

Links to previous Intent discussions

Intent to prototype: https://groups.google.com/a/chromium.org/g/blink-dev/c/Y6zNtG0f-6A
Intent to Experiment: https://groups.google.com/a/chromium.org/g/blink-dev/c/ftoKq32Baz4


This intent message was generated by Chrome Platform Status.

Yoav Weiss

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May 2, 2022, 7:34:26 AMMay 2
to Louise Brett, blink-dev, Glen Robertson
LGTM to experiment till M104 (inclusive).
Note that any extensions beyond this one would require showing substantial progress towards shipping.

On Mon, May 2, 2022 at 7:07 AM 'Louise Brett' via blink-dev <blin...@chromium.org> wrote:

Contact emails

loub...@google.comgle...@chromium.orgmgi...@chromium.org

Explainer

https://github.com/WICG/manifest-incubations/blob/gh-pages/user-preferences-explainer.md

Specification



Summary

Add a field to the web app manifest which allows apps to specify a different theme color and background color for dark mode.



Blink component

Blink>AppManifest

TAG review

https://github.com/w3ctag/design-reviews/issues/696

TAG review status

Pending

Risks



Interoperability and Compatibility


Would be good to answer their questions on that position.
 
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