Toolbar: Enqueue admin color scheme CSS on the frontend admin bar.

[huzaifaalmesbah]

Enqueue the user's selected admin color scheme CSS for the toolbar on the front end to ensure visual consistency with the admin dashboard.

Trac: https://core.trac.wordpress.org/ticket/64762

Changes

• Registers admin color schemes on the front end if not already available.
• Enqueues the user's color scheme CSS with admin-bar as its sole dependency.
• Supports all registered admin color schemes.
• Schemes without a CSS URL (e.g., Fresh) gracefully fall back to base styles.

Testing Instructions

1. Log in to WordPress.
2. Go to Users → Profile and select different color schemes.
3. Visit the frontend.
4. Expected: The toolbar matches the selected color scheme.

[github-actions]

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[github-actions]

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[huzaifaalmesbah]

Huzaifa-20260306105243.mp4

[amesplant]

Overall, I think. this looks like a great, and. made a few comments around:

1. Adding is_admin_bar_showing() guard
2. Confirming safe usage of register_admin_color_schemes() on the front end
3. Verifying 'modern' fallback behavior

[amesplant]

May also want to include && is_admin_bar_showing()

[amesplant]

The defensive handling around missing color schemes looks great. Is 'modern' guaranteed to exist once register_admin_color_schemes() runs? Just want to double-check since this is hard-coded here.

[amesplant]

Let's also add && is_admin_bar_showing() to this

[amesplant]

register_admin_color_schemes() is primarily intended for admin installation, calling it on the front end may introduce unexpected behavior if future code assumes admin context.