Yes, I believe the bug [1] is a blocker.

[1] https://issues.chromium.org/issues/328102503.

On Monday, March 18, 2024 at 1:51:43 AM UTC-7 yoav...@chromium.org wrote:

> Great to see a positive position from Mozilla on this.
>
> Is the above mentioned bug a blocker here?
>
> On Friday, March 8, 2024 at 12:52:58 AM UTC+1 yshal...@microsoft.com 
> wrote:
>
>> Thanks for taking a look and your feedback! Please let me know if you 
>> have any other questions or concerns.
>> On Thursday, March 7, 2024 at 3:23:02 PM UTC-8 William Smith wrote:
>>
>>> Thank you! And just to be clear, I personally don't see it as a problem 
>>> at all, I was only curious. I actually think this should have shipped along 
>>> with dark mode back in 2019, but better late than never. 
>>>
>>> On Thursday, March 7, 2024 at 5:22:14 PM UTC-5 Yaroslav Shalivskyy wrote:
>>>
>>>> Hello William! Thank you for selfhosting the feature!
>>>>
>>>> For the pages you mentioned, the feature is working as indented. If you 
>>>> enable the dark mode in OS settings (e.g., refer to the screenshot 
>>>> attached 
>>>> from the Windows device), root scrollbars will follow the OS settings 
>>>> unless page authors have explicitly specified page’s supported color 
>>>> schemes.
>>>>
>>>> However, I recently discovered a bug related to Chrome browser 
>>>> Appearance > Mode setting. The setting doesn't impact the calculation of 
>>>> web contents' used color scheme, resulting in inconsistent behavior. For 
>>>> more details, please see: [UsedColorSchemeRootScrollbars] Root 
>>>> scrollbars are dark when the browser color theme setting is "Light" and 
>>>> the 
>>>> OS theme settings is "Dark" [328102503] - Chromium 
>>>> <https://issues.chromium.org/issues/328102503>. I am currently 
>>>> prioritizing work on the CL to fix this issue.
>>>> On Wednesday, March 6, 2024 at 8:54:37 PM UTC-8 William Smith wrote:
>>>>
>>>>> Apologies if this isn't the correct place to ask this but I have this 
>>>>> working in Chrome Canary and as fantastic as it is, they behavior on some 
>>>>> websites has me confused: on https://en.wikipedia.org/wiki/Main_Page 
>>>>> and amazon.com the scrollbar is dark, but neither of those webpages 
>>>>> have a dark mode in any way. Is this a bug in the feature or is it 
>>>>> working 
>>>>> as intended?  
>>>>>
>>>>> On Tuesday, March 5, 2024 at 5:33:33 PM UTC-5 Yaroslav Shalivskyy 
>>>>> wrote:
>>>>>
>>>>>> Mike and Daniel, thank you for the suggestions!
>>>>>>
>>>>>> I requested browser vendor positions as well as reviews for 
>>>>>> chromestatus entry.
>>>>>>
>>>>>> Mozilla: [css-color-adjust-1] Root non-overlay scrollbars used color 
>>>>>> scheme · Issue #995 · mozilla/standards-positions (github.com) 
>>>>>> <https://github.com/mozilla/standards-positions/issues/995>
>>>>>> WebKit: [css-color-adjust-1] Root non-overlay scrollbars used color 
>>>>>> scheme · Issue #326 · WebKit/standards-positions (github.com) 
>>>>>> <https://github.com/WebKit/standards-positions/issues/326>
>>>>>>
>>>>>> I updated the chromestatus entry with these links as well.
>>>>>>
>>>>>> On Monday, March 4, 2024 at 12:08:23 PM UTC-8 mike...@chromium.org 
>>>>>> wrote:
>>>>>>
>>>>>>> Thanks for the summary of the experiment results on Edge - sounds 
>>>>>>> positive.
>>>>>>>
>>>>>>> If this is purely a browser UI change, then we don't really need the 
>>>>>>> blink-dev process at all. However, if we're relying on concepts defined 
>>>>>>> in 
>>>>>>> a CSSWG draft, and devs can change the outcome w/ some CSS (or maybe 
>>>>>>> here, 
>>>>>>> the lack of CSS to result in non-`normal` computed value...) it would 
>>>>>>> be if 
>>>>>>> there were interoperability in UI choices across browsers. I don't 
>>>>>>> necessarily think we should block on the outcome, but requesting vendor 
>>>>>>> positions could be useful.
>>>>>>>
>>>>>>> (and Daniel, if you scroll down a bit - I did ask about TAG and 
>>>>>>> browser signals. :))
>>>>>>> On 3/2/24 1:10 PM, Daniel Bratell wrote:
>>>>>>>
>>>>>>> Mike didn't refer to the TAG review or browser signals, but the 
>>>>>>> review steps in chromestatus. The intent should request, privacy, 
>>>>>>> security, 
>>>>>>> enterprise, and the other steps there.
>>>>>>>
>>>>>>> I agree that this lives in the borderland between user agent UI and 
>>>>>>> a web visible change so some shortcuts might be possible to motivate, 
>>>>>>> but 
>>>>>>> you still need to click the the appropriate buttons in the chromestatus 
>>>>>>> tool.
>>>>>>>
>>>>>>> /Daniel
>>>>>>> On 2024-03-01 21:10, 'Yaroslav Shalivskyy' via blink-dev wrote:
>>>>>>>
>>>>>>> Hello Mike,
>>>>>>>
>>>>>>> Thank you for taking a look!
>>>>>>>
>>>>>>> I am seeking consensus on how to approach the feature from a 
>>>>>>> standardization perspective. I think the feature can be considered a 
>>>>>>> browser UI change, which is why I haven't requested a TAG review or 
>>>>>>> signals from other engines. However, I am open to doing so if necessary.
>>>>>>>
>>>>>>> I apologize for any confusion. We did the general experimentation in 
>>>>>>> Edge (not the "origin trials" as I mentioned in the email). Retention 
>>>>>>> reports were neutral, and we observed no regressions in scorecards. 
>>>>>>> Also, 
>>>>>>> we have not received any negative user feedback thus far.
>>>>>>>
>>>>>>> I am working on requesting reviews for my chromestatus entry. Thanks 
>>>>>>> for pointing this out!
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Yaroslav
>>>>>>>
>>>>>>> On Friday, March 1, 2024 at 5:52:55 AM UTC-8 mike...@chromium.org 
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Hi there,
>>>>>>>>
>>>>>>>>
>>>>>>>> Would you mind requesting reviews for the various review gates in 
>>>>>>>> your chromestatus entry?
>>>>>>>>
>>>>>>>>
>>>>>>>> On 2/29/24 4:12 PM, 'Yaroslav Shalivskyy' via blink-dev wrote:
>>>>>>>>
>>>>>>>> Contact emails 
>>>>>>>> gerc...@microsoft.com, yshal...@microsoft.com
>>>>>>>>
>>>>>>>> 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>
>>>>>>>>
>>>>>>>> TAG review 
>>>>>>>> None
>>>>>>>>
>>>>>>>> TAG review status 
>>>>>>>> Not applicable
>>>>>>>>
>>>>>>>> Any reason you think this is N/A, or have you just not requested 
>>>>>>>> TAG review?
>>>>>>>>
>>>>>>>>
>>>>>>>> Risks 
>>>>>>>>
>>>>>>>> Interoperability and Compatibility 
>>>>>>>>
>>>>>>>> None
>>>>>>>>
>>>>>>>>
>>>>>>>> *Gecko*: No signal
>>>>>>>>
>>>>>>>> *WebKit*: No signal
>>>>>>>>
>>>>>>>> *Web developers*: No signals
>>>>>>>>
>>>>>>>> *Other signals*:
>>>>>>>>
>>>>>>>> Could we request signals please?
>>>>>>>>
>>>>>>>>
>>>>>>>> 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
>>>>>>>>
>>>>>>>>
>>>>>>>> Will this feature be supported on all six Blink platforms (Windows, 
>>>>>>>> Mac, Linux, ChromeOS, Android, and Android WebView)? 
>>>>>>>> Yes
>>>>>>>>
>>>>>>>> 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 
>>>>>>>> None
>>>>>>>>
>>>>>>>> Finch feature name 
>>>>>>>> UsedColorSchemeRootScrollbars
>>>>>>>>
>>>>>>>> Requires code in //chrome? 
>>>>>>>> False
>>>>>>>>
>>>>>>>> Tracking bug 
>>>>>>>> https://issues.chromium.org/issues/40259909
>>>>>>>>
>>>>>>>> Measurement 
>>>>>>>> Added a use counter UsedColorSchemeRootScrollbarsDark. The counter 
>>>>>>>> tracks the number of users who have dark mode root scrollbars due to 
>>>>>>>> the 
>>>>>>>> feature. Adoption in Edge Stable population based on this metric is 
>>>>>>>> approximately 13%.
>>>>>>>>
>>>>>>>> Availability expectation 
>>>>>>>> Initially available in Chromium browsers.
>>>>>>>>
>>>>>>>> Adoption expectation 
>>>>>>>> This feature immediately affects specific use cases upon launch.
>>>>>>>>
>>>>>>>> Adoption plan 
>>>>>>>> This feature has been through origin trials on Edge. Other browsers 
>>>>>>>> adopt this feature to fix specific use cases.
>>>>>>>>
>>>>>>>> Any details or feedback you can share from the Origin Trial?
>>>>>>>>
>>>>>>>>
>>>>>>>> Non-OSS dependencies 
>>>>>>>>
>>>>>>>> *Does the feature depend on any code or APIs outside the Chromium 
>>>>>>>> open source repository and its open-source dependencies to function?*
>>>>>>>> No.
>>>>>>>>
>>>>>>>> Estimated milestones 
>>>>>>>>
>>>>>>>> Shipping on desktop
>>>>>>>> 124
>>>>>>>> DevTrial on desktop
>>>>>>>> 121
>>>>>>>>
>>>>>>>>
>>>>>>>> Anticipated spec changes 
>>>>>>>>
>>>>>>>> *Open questions about a feature may be a source of future web 
>>>>>>>> compat or interop issues. Please list open issues (e.g. links to known 
>>>>>>>> github issues in the project for the feature specification) whose 
>>>>>>>> resolution may introduce web compat/interop risk (e.g., changing to 
>>>>>>>> naming 
>>>>>>>> or structure of the API in a non-backward-compatible way).*
>>>>>>>> None
>>>>>>>>
>>>>>>>> Link to entry on the Chrome Platform Status 
>>>>>>>> https://chromestatus.com/feature/5089486318075904
>>>>>>>>
>>>>>>>> Links to previous Intent discussions 
>>>>>>>> Intent to prototype: 
>>>>>>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/PH8PR00MB16366CA3D32D8ECE2C646C54A94D2%40PH8PR00MB1636.namprd00.prod.outlook.com
>>>>>>>>
>>>>>>>> This intent message was generated by Chrome Platform Status 
>>>>>>>> <https://chromestatus.com/>.
>>>>>>>>
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>>>>>>>>  
>>>>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/LV3PR00MB17488611D88C9E41AC6A806BA95F2%40LV3PR00MB1748.namprd00.prod.outlook.com?utm_medium=email&utm_source=footer>
>>>>>>>> .
>>>>>>>>
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>>>>>>>  
>>>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/34e66337-a227-4521-93bc-42317a1659b4n%40chromium.org?utm_medium=email&utm_source=footer>
>>>>>>> .
>>>>>>>
>>>>>>>

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