*"Therefore, it seems like this feature doesn't have to go through the 
Blink process."*

Yoav, thank you for the feedback! Yeah, I am trying to clarify the process 
and get consensus for the next steps.


*"This is fantastic! Is there a flag for this?"*
Yes! William, you can enable the feature using the runtime flag: 
*UsedColorSchemeRootScrollbars.*The feature doesn't have an "experimental" 
status yet so it can only be enabled via the command line.

On Monday, February 19, 2024 at 10:07:10 AM UTC-8 William Smith wrote:

> This is fantastic! Is there a flag for this?
>
> On Thursday, February 15, 2024 at 7:01:45 PM UTC-5 Yaroslav Shalivskyy 
> wrote:
>
>> Hello everyone!
>>
>> I think the feature can be considered a browser UI change, so I am 
>> interested to gain consensus on how to approach the feature from 
>> standardization point of view. I know +Robert Flack on a separate thread 
>> suggested that root scrollbars can be considered to be outside the web 
>> content in a way the other scrollbars are not. E.g. nothing usually draws 
>> on top of root scrollbars or styles content around / behind them.
>>
>> Enabling the feature in Can/Dev/Beta/Stable as a part of experimentation 
>> in Edge so far didn't have any negative reactions.
>>
>> I am looking forward to hearing your opinion on this!
>>
>> Thanks,
>> Yaroslav
>>
>> On Thursday, February 15, 2024 at 3:10:56 PM UTC-8 Yaroslav Shalivskyy 
>> wrote:
>>
>>> Contact emails 
>>> [email protected], [email protected]
>>>
>>> Explainer 
>>> None
>>>
>>> Specification 
>>> https://www.w3.org/TR/css-color-adjust-1
>>>
>>> Summary 
>>>
>>> Makes the browser use the user's preferred color scheme to render the 
>>> viewport scrollbars if the value of "page’s supported color schemes" is 
>>> 'normal' or not specified, and the computed value of the color-scheme for 
>>> the root element is 'normal'. Viewport scrollbars can be considered to be 
>>> outside the web content. Therefore, the user agents should honor the user's 
>>> preferred color scheme when rendering viewport scrollbars if page authors 
>>> have not explicitly specified support for color schemes.
>>>
>>>
>>> Blink component 
>>> Blink>Layout>Scrollbars 
>>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ELayout%3EScrollbars>
>>>
>>> Motivation 
>>>
>>> Many web pages don't specify the support for light/dark color schemes 
>>> using CSS "color-scheme" property or meta tags. In such a case, the used 
>>> color scheme is light for scrollbars and other interactive UI elements 
>>> despite the user preference set on the browser/OS level. Although the 
>>> behavior is expected for elements which are part of the web content, 
>>> viewport non-overlay scrollbars always stay on the side of the page and are 
>>> treated by users as a part of the browser UI. The current behavior confuses 
>>> users who have selected dark mode and expect viewport scrollbars to follow 
>>> their choice. Edge users repeatedly reported the viewport scrollbars being 
>>> light when dark mode is enabled. These are a few public feedback items: 
>>> https://www.reddit.com/r/MicrosoftEdge/comments/xrf1wb/scrollbars_are_wh 
>>> https://www.reddit.com/r/chrome/comments/lz0778/any_way_to_remove_or_turn_dark_
>>>  
>>> https://www.reddit.com/r/ArcBrowser/comments/18ldsj2/why_in_dark_mo 
>>> Relevant Chromium and Mozilla issues: 
>>> https://issues.chromium.org/issues/40155812 
>>> https://bugzilla.mozilla.org/show_bug.cgi?id=1859940 The feature 
>>> doesn't impact developer APIs and still allows to control the color scheme 
>>> for scrollbars and other controls. The new behavior makes the browser use 
>>> the user’s preferred color-scheme to render viewport non-overlay scrollbars 
>>> when page authors don’t specify the color scheme for the root element.
>>>
>>>
>>> Initial public proposal 
>>> [css-color-adjust-1] Root viewport non-overlay scrollbars should follow 
>>> the user's preferred color scheme by default · Issue #8603 · 
>>> w3c/csswg-drafts (github.com) 
>>> <https://github.com/w3c/csswg-drafts/issues/8603>
>>>
>>> TAG review 
>>> None
>>>
>>> TAG review status 
>>> Not applicable
>>>
>>> Risks 
>>>
>>>
>>> Interoperability and Compatibility 
>>>
>>> None
>>>
>>>
>>> *Gecko*: No signal
>>>
>>> *WebKit*: No signal
>>>
>>> *Web developers*: No signals
>>>
>>> *Other signals*:
>>>
>>> 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?*
>>>
>>> None
>>>
>>>
>>> Debuggability 
>>>
>>> None
>>>
>>>
>>> Is this feature fully tested by web-platform-tests 
>>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
>>> ? 
>>> No
>>>
>>> Flag name on chrome://flags 
>>> Runtime feature name: UsedColorSchemeRootScrollbars
>>>
>>> Finch feature name 
>>> None
>>>
>>> Non-finch justification 
>>> None
>>>
>>> Requires code in //chrome? 
>>> False
>>>
>>> Tracking bug 
>>> https://issues.chromium.org/issues/40259909
>>>
>>> Estimated milestones 
>>>
>>> No milestones specified
>>>
>>>
>>> Link to entry on the Chrome Platform Status 
>>> https://chromestatus.com/feature/5089486318075904
>>>
>>> This intent message was generated by Chrome Platform Status 
>>> <https://chromestatus.com/>.
>>>
>>

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