<?php
$colors = get_field('colors');
if( $colors ): ?>
<ul>
<?php foreach( $colors as $color ): ?>
<li><?php echo $color; ?></li>
<?php endforeach; ?>
</ul>
<?php endif; ?>
ACF
ACF Post Object with Multiple Options
<?php
/*
* Loop through post objects (assuming this is a multi-select field) ( don't setup postdata )
* Using this method, the $post object is never changed so all functions need a seccond parameter of the post ID in question.
*/
$post_objects = get_field('YOUR_CUSTOM_FIELD');
if( $post_objects ): ?>
<ul>
<?php foreach( $post_objects as $post_object): ?>
<li>
<a href="<?php echo get_permalink($post_object->ID); ?>"><?php echo get_the_title($post_object->ID); ?></a>
</li>
<?php endforeach; ?>
</ul>
<?php endif;
?>