ACF Template Builder - Add a custom shortcode attribute

bbacf_add_custom_sc_attr.php

add_filter( 'bbacf/helpers/sc_attr/type=google_map' , 'add_color_sc_attribute' );

/**
 * add the postid attribute to the default sc attr
 * @param  [type] $array [description]
 * @return [type]        [description]
 */
function add_color_sc_attribute( $array ) {
	return array_merge(
				$array,
				array(
                    'color'		=> null,
                    )
 			);
}