Wordpress Disable Theme Changing

So you want that your client should not change the theme. OK, just copy the following snippet to your functions.php file.

[php]
add_action('admin_init', 'slt_lock_theme');
function slt_lock_theme() {
global $submenu, $userdata;
get_currentuserinfo();
if ($userdata->ID != 1) {
unset($submenu['themes.php'][5]);
unset($submenu['themes.php'][15]);
}
}[/php]

Once saved, your client will not be able to switch or change themes anymore.