Wordpress Admin Custom Metabox for a CTA w/ Live Preview

Wordpress Admin Panel Custom Metabox Fields for a CTA with live preview. Allows me to turn on/off a Call To Action button/banner on a per page basis and also see the URL, text, button text, and select from a button color style. As you change the text or button color style, it update a live preview at the bottom to show what the CTA will look like on the actual frontend page. It uses mostly a lot of custom JavaScript