[julien-deramond]

Since @twbs/bui 0.1.10 (#43339), BUI's <Head> outputs a theme-color per color scheme (#fff for light, #080a0c for dark, matching v6's body background) before the rest of the head. Browsers use the first theme-color that matches, so our own <meta name="theme-color" content="#712cf9"> in Favicons.astro comes after them and is never used. This removes it, so each page has only the per-scheme pair. It depends on #43339, and before that one is merged the line is still the site's only theme-color.

The purple brand color is kept where it still means something: the mask-icon color and the web app manifest's theme_color are unchanged.

On the deploy preview of #43339, /docs/getting-started/introduction/ had four tags in this order:

<meta name="color-scheme" content="light dark">
<meta name="theme-color" content="#fff" media="(prefers-color-scheme: light)">
<meta name="theme-color" content="#080a0c" media="(prefers-color-scheme: dark)">
<meta name="theme-color" content="#712cf9">

After this change, the page should have the first three only. site/src/assets/stackblitz.js still strips meta[name="theme-color"] from StackBlitz examples, which now removes BUI's pair instead.

curl -s https://deploy-preview-43347--twbs-bootstrap.netlify.app/docs/getting-started/introduction/ \
  | grep -oE '<meta name="(theme-color|color-scheme)"[^>]*>'

Results:

<meta name="color-scheme" content="light dark">
<meta name="theme-color" content="#fff" media="(prefers-color-scheme: light)">
<meta name="theme-color" content="#080a0c" media="(prefers-color-scheme: dark)">

🤖 Generated with Claude Code

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[coliff]

@twbs/bui looks really interesting! (https://www.npmjs.com/package/@twbs/bui).
Will it be open-sourced? The GitHub repo is private right now...