amadhavan

I added this to my functions.php

//hide theme and customize on admin bar and backend for anyone that is not an admin
if ( !is_super_admin() ) {
add_action( 'wp_before_admin_bar_render', 'admin_bar_hide' );
add_action('admin_menu', 'customize_admin_menu_hide', 999);

}
function admin_bar_hide()
{
    global $wp_admin_bar;

    $wp_admin_bar->remove_menu('customize');
	$wp_admin_bar->remove_node( 'themes' );
}

function customize_admin_menu_hide(){

global $submenu;
// Appearance customize Menu
unset($submenu['themes.php'][6]);	

}