Switch theme only for one or more users - Wordpress

<?php
//// Vladimir Zhelnov - neatek.pw - Web/iOS dev
// wp-content/plugins/switch/index.php
add_filter('template', 'change_theme');
add_filter('option_template', 'change_theme');
add_filter('option_stylesheet', 'change_theme');
function change_theme($theme) {
    if ( get_current_user_id() == USERID_OF_USER_WP ) {
        $theme = 'NAME_OF_THEME';
    }
    return $theme;
}