Doesn't work night theme on Youtube

[ArtMoney]

//MODEDIT: Duplicate of Override system settings for dark/light mode in themes

I have been using Opera. It supports auto change of theme on Youtube, when you chose "device theme".
But in Vivaldi Yotube still be on light theme when I change browser to night mode.

You really don't know about that? Fix it, please.

[DoctorG]

@artmoney said in Doesn't work night theme on Youtube:

theme on Youtube, when you chose "device theme".

When i switch my Windows 11 to Dark Theme, Vivaldi and Youtube gets a dark design.

@artmoney said in Doesn't work night theme on Youtube:

till be on light theme when I change browser to night mode.

What is Nigh Mode? You mean the yellowish display in Windows at evening to protect eyes?
That does not switch to a dark theme in Opera and Vvialdi browser.

[Catweazle]

@artmoney , I use dark mode in flags, with this I have a dark theme in every page, including Chrome Store, even in the menus and web panel in Vivaldi itself
In the adressbar:

vivaldi://flags/#enable-force-dark

There in the pulldown menu select "Enabled with selective inversion of non image elements"

Relaunch Vivaldi.
Never more bright mode in almost all pages, if yo have a page where it don't work properly, you can use the invert filter in the page actions menu (<>), which revert the effect in part.

[ArtMoney]

@doctorg said in Doesn't work night theme on Youtube:

What is Nigh Mode? You mean the yellowish display in Windows at evening to protect eyes?

I mean dark theme.
@catweazle said in Doesn't work night theme on Youtube:

I use dark mode in flags

That's crap. I wanna change theme every evening. Vivaldi has nice auto switch, but Youtube don't react on dark themes of browser. Need to fix that.

[DoctorG]

@artmoney said in Doesn't work night theme on Youtube:

I mean dark theme.

The Contrast Mode in Windows?

[ArtMoney]

@doctorg said in Doesn't work night theme on Youtube:

The Contrast Mode in Windows?

No, default. React only on applications dark mode.

[Pathduck]

@artmoney Set your OS to dark theme, and sites that support it will change. This has nothing to do with Vivaldi theme setting.

[ArtMoney]

@pathduck said in Doesn't work night theme on Youtube:

This has nothing to do with Vivaldi theme setting.

But it works in Opera and Microsoft Edge.

[Pathduck]

@artmoney Works fine in Vivaldi too, with Windows 10 theme set to dark.

I don't know what you are doing wrong.

Please try the troubleshooting steps:
https://help.vivaldi.com/desktop/troubleshoot/troubleshooting-issues/

[ArtMoney]

@pathduck said in Doesn't work night theme on Youtube:

Works fine in Vivaldi too, with Windows 10 theme set to dark.

Man, I told about dark theme in browser, not in Windows.

[DoctorG]

@artmoney said in Doesn't work night theme on Youtube:

I told about dark theme in browser, not in Windows.

Tyr to enable Settings → Themes → Theme Schedule → (*) Operating System → Dark: Dark

[ArtMoney]

@doctorg said in Doesn't work night theme on Youtube:

(*) Operating System → Dark: Dark

I haven't this option in browser.
Sorry, it does not work.

[Pathduck]

@artmoney There is no option in Vivaldi to override OS theme setting. Maybe one day.

You can use cmdline flag:
--force-dark-mode
https://peter.sh/experiments/chromium-command-line-switches/#force-dark-mode

[ArtMoney]

@pathduck said in Doesn't work night theme on Youtube:

There is no option in Vivaldi to override OS theme setting.

It works in Edge and Opera. So it's can.

[Pathduck]

@artmoney Yes, use --force-dark-mode flag, it will work.

[Komposten]

If I were to make a guess, Opera sets the prefers-color-scheme property to "dark" when you enable Dark Theme. YouTube checks this property and thus activates its own dark theme.

Vivaldi most likely does not set this property when you choose a dark theme and therefore YouTube is never told that it should go dark.

I don't think there is anything you can do about it. We'll just have to hope that Vivaldi fixes this.

[ArtMoney]

@pathduck @artmoney said in Doesn't work night theme on Youtube:

That's crap. I wanna change theme every evening. Vivaldi has nice auto switch, but Youtube don't react on dark themes of browser. Need to fix that.

It is just inversion all white colors to dark. They should make websites react for themes in brower, otherwise no sence using themes.