function additional_admin_color_schemes() {
  //Get the theme directory
  $theme_dir = get_template_directory_uri();

  //Ocean
  wp_admin_css_color( 'ocean', __( 'Ocean' ),
    $theme_dir . '/admin-colors/ocean/colors.min.css',
    array( '#aa9d88', '#9ebaa0', '#738e96', '#f2fcff' )
  );
}
add_action('admin_init', 'additional_admin_color_schemes');