I created a content type with a text field in an Omega subtheme called "Prepaid" in Drupal 7. When a user inputs a hex value, it will create a div within the content area with inline CSS that changes the background color. I know the PHP to make this work, but I am having issues determining where to place the function, where to call the function, and how to reference the field I created in the code. I am not new to coding, but I am new to coding within Drupal. If anyone can help, I would be eternally grateful.