A WordPress plugin to add inline CSS in the <head>.
wp_enqueue_inline_style('priority-style', 'http://www.site.com/path/to/style/priority-style.css', array(), '1.0', 'all');wp_register_inline_style('priority-style', 'http://www.site.com/path/to/style/priority-style.css', array(), '1.0', 'all');wp_register_inline_style('existing-style');