Destacar Los post_states En La Administración

function custom_post_states($post_states) {
    foreach ($post_states as &$state) {
        $state = '<span class="'.strtolower($state).' states">' . str_replace(' ', '-', $state) . '</span>';
    }
    return $post_states;
}
add_filter('display_post_states', 'custom_post_states');

function custom_post_states_css() {
    echo '<style>
         .post-state .states {
             font-size:10px;
             padding:3px 8px 3px 8px;
             -moz-border-radius:2px;
             -webkit-border-radius:2px;
             border-radius:2px;
         }
         .post-state .password { background: #000;color:#fff; }
         .post-state .pending { background: #83CF21 !important;color:#fff; }
         .post-state .private { background: #E0A21B;color:#fff; }
         .post-state .draft { background: #006699;color:#fff; }
         </style>';
}
add_action('admin_head','custom_post_states_css');