Wrong URL for color styles

There’s an error in wpadmin_classic() function which leads to an invalid URL for the colors-classic stylesheet:

<link rel='stylesheet' id='colors-classic-css'  href='http://1?ver=3.8' type='text/css' media='all' />

The solution:

1. Add this line to the registration section before colors-fresh-classic:

   wp_register_style('colors-classic', plugin_dir_url( __FILE__ ) . 'wp-admin-css/colors-classic.min.css');

2. Add this line to the enqueueing section before buttons-classic:

   wp_enqueue_style('wp-admin-classic');

Also, ie-classic stylesheet is never loaded since [822703], even for IE7. This line should be restored in the enqueueing section:

wp_enqueue_style('ie-classic');

http://wordpress.org/plugins/wp-admin-classic/