Activate font smoothing for MP6

gistfile1.php

<?php
/**
 * Adds font smoothing to MP6 in the Admin Bar and the entire WP Admin area.
 *
 * @print HTML
 * @action admin_head
 * @action wp_head
 */
function fjarrett_mp6_font_smoothing() {
	if ( ! is_plugin_active( 'mp6/mp6.php' ) )
		return;

	$selector = is_admin() ? '#wpadminbar, body' : '#wpadminbar';

	// webkit-font-smoothing: Chrome, Safari, Opera
	// moz-osx-font-smoothing: Firefox 25+ on OSX
	printf( '<style type="text/css">%s { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }</style>', esc_html( $selector ) );
}
add_action( 'admin_head', 'fjarrett_mp6_font_smoothing' );
add_action( 'wp_head', 'fjarrett_mp6_font_smoothing' );

@fjarrett Do you have plans to implement this, like an MP6 contrib or a plugin?

Beautiful, BTW.

@johnregan3 Maybe when I have the spare time this can be made into a free plugin...or better yet, you could make/release the plugin and just make me a co-author :-)

@johnregan3 BTW once we see how MP6 is going to be integrated into WordPress 3.8 (like if it will be default or not) we'll have to wrap everything with a new conditional, like:

global $wp_version;

if ( is_plugin_active( 'mp6/mp6.php' ) || version_compare( $wp_version, '3.8', '>=' ) ) { ...