Remove Customize from Admin Menu

Try using the following:

function remove_menus(){
  remove_submenu_page( 'themes.php', 'customize.php' );
}
add_action( 'admin_menu', 'remove_menus' );

Let me know if that works.

Also, can you share how you removed the Header and Background links?

Thanks…found another solution since then and moved on. ??

Here is what we did for the background..can’t seem to find the one for the header but I’m sure it’s similar if you do a quick search for the related code:

//Remove the custom options provided by the default twentytwelve theme.
add_action( 'after_setup_theme','remove_twentytwelve_options', 100 );
function remove_twentytwelve_options() {

	remove_custom_background();

	remove_action('admin_menu', 'twentytwelve_theme_options_add_page', 11);

}

By the way, this is the code we used for the Customize area:

function remove_submenus() {
  global $submenu;
  unset($submenu['index.php'][10]); // Removes 'Updates'.
  unset($submenu['themes.php'][5]); // Removes 'Themes'.
  unset($submenu['customize.php'][1]); // Removes 'Themes'.
  unset($submenu['options-general.php'][30]); // Removes 'Customize'.
	unset($submenu['options-general.php'][40]); // Removes 'Customize'.

}

function remove_customize_page(){
	global $submenu;
	unset($submenu['themes.php'][6]); // remove customize link
}
add_action( 'admin_menu', 'remove_customize_page');

Have fun ??