In WordPress 3.1, the network-wide options being moved to their own area in WordPress to make it easier on network administrators.
To take a just a bit further, I put together this script that will switch color schemes when you’re in the Network Admin.
<?php add_action('admin_print_styles', 'admin_color_swap',99); function admin_color_swap() { if (is_network_admin()) { global $current_user; get_currentuserinfo(); $selected = $current_user->admin_color; $swapped = array( 'fresh' => 'classic', 'classic' => 'fresh'); $new = $swapped[$selected]; echo '<link rel="stylesheet" type="text/css" href="/wp-admin/css/colors-'.$new.'.css" />'; } } ?>
So if you’ve selected the gray color scheme in your profile, you’ll see blue in the Network Admin, and vice versa.
Just put this script in your mu-plugins folder.
This has only been tested in the 3.1 beta.