diff --git a/src/wp-includes/admin-bar.php b/src/wp-includes/admin-bar.php
index b9c7872d0cc07..22f610264caf1 100644
--- a/src/wp-includes/admin-bar.php
+++ b/src/wp-includes/admin-bar.php
@@ -1443,9 +1443,9 @@ function _get_admin_bar_pref( $context = 'front', $user = 0 ) {
  *
  * @since 7.0.0
  *
- * @global array $_wp_admin_css_colors Registered administration color schemes.
+ * @global array<string, object{ url: string }> $_wp_admin_css_colors Registered administration color schemes.
  */
-function wp_admin_bar_add_color_scheme_to_front_end() {
+function wp_admin_bar_add_color_scheme_to_front_end(): void {
 	if ( is_admin() ) {
 		return;
 	}
@@ -1463,23 +1463,41 @@ function wp_admin_bar_add_color_scheme_to_front_end() {
 	}
 
 	$color = $_wp_admin_css_colors[ $color_scheme ] ?? null;
-	$url   = $color->url ?? '';
-
-	if ( $url ) {
-		$response = wp_remote_get( $url );
-		if ( ! is_wp_error( $response ) ) {
-			$css = $response['body'];
-			if ( is_string( $css ) && str_contains( $css, '#wpadminbar' ) ) {
-				$start_position = strpos( $css, '#wpadminbar' );
-				$end_position   = strpos( $css, '.wp-pointer' );
-				if ( false !== $end_position && $end_position > $start_position ) {
-					$css = substr( $css, $start_position, $end_position - $start_position );
-					if ( SCRIPT_DEBUG ) {
-						$css = str_replace( '/* Pointers */', '', $css );
-					}
-				}
-				wp_add_inline_style( 'admin-bar', $css );
-			}
+	if ( ! is_object( $color ) || ! isset( $color->url ) || ! is_string( $color->url ) ) {
+		return;
+	}
+
+	$path = wp_parse_url( $color->url, PHP_URL_PATH );
+	if ( ! $path || ! str_ends_with( $path, '.css' ) ) {
+		return;
+	}
+
+	$css_admin_relative_path = strstr( $path, '/wp-admin/' );
+	if ( false === $css_admin_relative_path ) {
+		return;
+	}
+
+	$css_path = untrailingslashit( ABSPATH ) . $css_admin_relative_path;
+	if ( ! is_readable( $css_path ) ) {
+		return;
+	}
+
+	$css = file_get_contents( $css_path );
+	if ( false === $css ) {
+		return;
+	}
+
+	$start_position = strpos( $css, '#wpadminbar' );
+	if ( false === $start_position ) {
+		return;
+	}
+
+	$end_position = strpos( $css, '.wp-pointer' );
+	if ( false !== $end_position && $end_position > $start_position ) {
+		$css = substr( $css, $start_position, $end_position - $start_position );
+		if ( SCRIPT_DEBUG ) {
+			$css = str_replace( '/* Pointers */', '', $css );
 		}
 	}
+	wp_add_inline_style( 'admin-bar', $css );
 }
diff --git a/tests/phpunit/tests/dependencies/wpStyleLoaderSrc.php b/tests/phpunit/tests/dependencies/wpStyleLoaderSrc.php
index 170129580a3e7..e7b865bdf060c 100644
--- a/tests/phpunit/tests/dependencies/wpStyleLoaderSrc.php
+++ b/tests/phpunit/tests/dependencies/wpStyleLoaderSrc.php
@@ -10,6 +10,26 @@
  */
 class Tests_Dependencies_wpStyleLoaderSrc extends WP_UnitTestCase {
 
+	public ?WP_Styles $original_styles;
+
+	public ?WP_Screen $original_screen;
+
+	public function set_up(): void {
+		global $wp_styles, $current_screen;
+		parent::set_up();
+
+		$this->original_styles = $wp_styles;
+		$this->original_screen = $current_screen;
+		unset( $wp_styles, $current_screen );
+	}
+
+	public function tear_down(): void {
+		global $wp_styles, $current_screen;
+		$wp_styles      = $this->original_styles;
+		$current_screen = $this->original_screen;
+		parent::tear_down();
+	}
+
 	/**
 	 * Tests that PHP warnings are not thrown when wp_style_loader_src() is called
 	 * before the `$_wp_admin_css_colors` global is set within the admin.
@@ -20,12 +40,41 @@ class Tests_Dependencies_wpStyleLoaderSrc extends WP_UnitTestCase {
 	 *
 	 * @ticket 61302
 	 * @ticket 64762
+	 *
+	 * @covers ::wp_admin_bar_add_color_scheme_to_front_end
+	 */
+	public function test_without_wp_admin_css_colors_global_frontend(): void {
+		unset( $GLOBALS['current_screen'] );
+		$this->assertFalse( is_admin(), 'Expected not admin.' );
+		wp_styles();
+		wp_admin_bar_add_color_scheme_to_front_end();
+		$inline_styles = wp_styles()->get_data( 'admin-bar', 'after' );
+		$this->assertIsArray( $inline_styles, 'Expected inline styles to be added.' );
+		$inline_css = implode( "\n", $inline_styles );
+		$this->assertStringContainsString( '#wpadminbar', $inline_css );
+		$this->assertStringNotContainsString( '/* Pointers */', $inline_css );
+		$this->assertStringNotContainsString( '.wp-pointer', $inline_css );
+
+		$style_loader_src = wp_style_loader_src( '', 'colors' );
+		$this->assertIsString( $style_loader_src );
+		$this->assertStringContainsString( '/colors.css', $style_loader_src );
+	}
+
+	/**
+	 * Tests that nothing is done when in the admin.
+	 *
+	 * @ticket 61302
+	 * @ticket 64762
+	 *
+	 * @covers ::wp_admin_bar_add_color_scheme_to_front_end
 	 */
-	public function test_without_wp_admin_css_colors_global() {
-		if ( is_admin() ) {
-			$this->assertFalse( wp_style_loader_src( '', 'colors' ) );
-		} else {
-			$this->assertStringContainsString( '/colors.css', wp_style_loader_src( '', 'colors' ) );
-		}
+	public function test_without_wp_admin_css_colors_global_admin(): void {
+		global $wp_styles;
+		set_current_screen( 'index.php' );
+		$wp_styles = null;
+		$this->assertTrue( is_admin(), 'Expected admin.' );
+		wp_styles();
+		wp_admin_bar_add_color_scheme_to_front_end();
+		$this->assertFalse( wp_styles()->get_data( 'admin-bar', 'after' ), 'Expected no inline style to be added in the admin.' );
 	}
 }