WordPress 3.8 - replace admin Open Sans font with your own version

wp-3-8-replace-open-sans

function replace_open_sans() {
  // Kill the original style
	wp_deregister_style('open-sans');
	// Replace it with your own (just as an example, I included only the 300 weight)
	wp_register_style( 'open-sans', 'http://fonts.googleapis.com/css?family=Open+Sans:300' );
	wp_enqueue_style( 'open-sans');
}
add_action( 'wp_enqueue_scripts', 'replace_open_sans' );
// Thanks to @timkinnane
add_action( 'admin_enqueue_scripts', 'replace_open_sans' );

Thanks for this!
I found I needed to use the following to replace it in dashboard AND the admin bar.

add_action( 'admin_enqueue_scripts', 'replace_open_sans' );
add_action( 'wp_enqueue_scripts', 'replace_open_sans' );