MotoPress - working with styles

gistfile1.php

<?php

/**
* Plugin Name: MotoPress Change Styles Example
* Plugin URI: http://www.getmotopress.com/
* Description: This example describes how to add new styles to MotoPress objects
* Version: 0.1
* Author: MotoPress Team
* Author URI: http://www.getmotopress.com/
* License: GPL2 or later
*/

function extendButtonStyleClasses($motopressCELibrary) {
    if (isset($motopressCELibrary)) {
        $buttonObj = &$motopressCELibrary->getObject('mp_button');
        if ($buttonObj) {
            $styleClasses = &$buttonObj->getStyle('mp_style_classes');

            //add 'lavender' predefined class
             $styleClasses['predefined']['color']['values']['lavender'] = array(
                'class' => 'mp-button-color-lavender',
                'label' => __('Lavender', 'domain'),
             );
             /* Note: add "mp-button-color-lavender" style to your stylesheet,
              * for example .mp-button-color-lavender {background-color: #E6E6FA;color: #858599 !important;text-shadow: none !important;}
              * For more information visit http://www.getmotopress.com/blog/release-of-motopress-1-5-0-style-manager/#styling-an-object
             */
             
            //remove 'red' predefined class
            unset($styleClasses['predefined']['color']['values']['red']);
            
            // change basic class
            $styleClasses['basic']['class'] = 'my-button';
        }
    }
}
add_action('mp_library', 'extendButtonStyleClasses', 11, 1);