Get User Admin Color Schemes for UI styling

plugin.php

<?php 

// Add Current Users Admin Color Scheme
// 1. Create helper function to grab individual colors easily
// 2. Add individual colors to document root as CSS variables

function wpptpcv_return_admin_colors() {
    global $_wp_admin_css_colors;

    // Get the user's selected color scheme name
    $color_name = get_user_option('admin_color');

    // Assuming that $_wp_admin_css_colors is a dictionary with color schemes
    // and each color scheme has a 'colors' attribute
    $admin_colors = $_wp_admin_css_colors;

    // Get the colors for the selected color scheme
    $colors = $admin_colors[$color_name]->colors;

    // Return the colors as an array
    return $colors;
}

// Add colors as CSS variables
// Some schemes only have 3 colors, so limiting to that for now
function wpptpcv_custom_admin_styles() {

	$colors = wpptpcv_return_admin_colors();
	?>
	<style id="wpptpvc-admin-color-scheme-variables"> 
	:root {
		--color1: <?php echo $colors[1] ?>;
		--color2: <?php echo $colors[2] ?>;
		--color3: <?php echo $colors[3] ?>;
	  }
	</style>
	<?php 
}

add_action('admin_head', 'wpptpcv_return_admin_colors');