Set custom admin color scheme for your local Wordpress environment

wp-env-color-scheme.php

<?php

// Force Color Scheme for environments
// so that you're less likely to accidentally 
// make a DEV update to a Production WordPress 
// instance. 
add_filter( 'get_user_option_admin_color', 'update_user_option_admin_color', 5 );
function update_user_option_admin_color( $color_scheme ) {
    if (defined('WP_LOCAL_DEV') && WP_LOCAL_DEV) return 'ocean';

    return 'default';
}