/* adding green text formatting to mce editor */

function wpb_mce_buttons_2($buttons) {
		array_unshift($buttons, 'styleselect');
		return $buttons;
}
add_filter('mce_buttons_2', 'wpb_mce_buttons_2');


/*
* Callback function to filter the MCE settings
*/

function my_mce_before_init_insert_formats( $init_array ) {

// Define the style_formats array

		$style_formats = array(
/*
* Each array child is a format with it's own settings
* Notice that each array has title, block, classes, and wrapper arguments
* Title is the label which will be visible in Formats menu
* Block defines whether it is a span, div, selector, or inline style
* Classes allows you to define CSS classes
* Wrapper whether or not to add a new block-level element around any selected elements
*/
				array (
						'title' => 'Light Green Text',
						'inline' => 'span',
						'classes' => 'lightgreen',
						'wrapper' => true,
				),
				array (
						'title' => 'Dark Green Text',
						'inline' => 'span',
						'classes' => 'darkgreen',
						'wrapper' => true,
				)
		);
		// Insert the array, JSON ENCODED, into 'style_formats'
		$init_array['style_formats'] = json_encode( $style_formats );

		return $init_array;

}
// Attach callback to 'tiny_mce_before_init'
add_filter( 'tiny_mce_before_init', 'my_mce_before_init_insert_formats' );