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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>>>>> To view this discussion on the web visit 
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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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>>>> To view this discussion on the web visit 
>>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/34e66337-a227-4521-93bc-42317a1659b4n%40chromium.org
>>>>  
>>>> <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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