[Admin Reskin] Site Health loadingPulse animation and blue badges use old color scheme

[huzaifaalmesbah]

In Tools → Site Health, some UI elements still use legacy color values instead of the updated Admin Reskin tokens.

Specifically:

• The .site-health-progress loadingPulse animation uses the old blue color.
• .health-check-accordion-trigger .badge.blue

These elements rely on old color values (e.g. #72aee6) instead of standardized admin CSS variables.

Steps to reproduce:

1. Go to Tools → Site Health.
2. Observe the loading indicator (“Results are still loading…”).
3. and Observe the "Security" badge inside the accordion.

Core trac ticket - https://core.trac.wordpress.org/ticket/64772

[noruzzaman]

Test Report

Patch tested: ​https://github.com/WordPress/wordpress-develop/pull/11124

Environment

• WordPress: 7.0-beta2-20260303.214707
• PHP: 7.4.33
• Server: PHP.wasm
• Database: WP_SQLite_Driver (Server: 8.0.38 / Client: 3.51.0)
• Browser: Chrome 145.0.0.0
• OS: Windows 10/11
• Theme: Twenty Eleven 5.0
• MU Plugins: None activated
• Plugins:
  • Test Reports 1.2.1

Actual Results

1. ✅ Issue resolved with patch.

Before	After

[SergeyBiryukov]

In 61807:

Admin Reskin: Correct color scheme for Site Health animation and blue badges.

Props huzaifaalmesbah, niravsherasiya7707, noruzzaman.
Fixes #64772.