<meta> theme-color & background-color changes when updated in the page

[thepra]

Problem Description

On Chromium based browsers and Safari che top UI of the window/app does reflect the changes to the meta elements behind theme-color and background-color.
On FirefoxPWA it doesn't work.
Working example:

(sorry for the bright start, it's an HDR enabled screen)

Proposed Solution

Have FirefoxPWA update the top window UI color based on such meta properties.

[xorik]

Hi. I also have an PWA, that changes header color, according to style.

Here's video from chrome:
https://www.youtube.com/watch?v=nqgqPnKaAqY

When primary color is changed, header color is also changed dynamically.
Would be nice to have in your addon.

[filips123]

Until I implement this, you can use an addon such as VivaldiFox (and I think there are also some other similar addons) to do this. Just make sure you disable "Allow web apps to override a theme color" in Firefox settings and enable "Apply theme color" for Frame in VivaldiFox.