I have several "wrapper" files in a module under development. They are essentially outside the purview of drupal and consequently I can not think of a way to modify them within a theme. They fetch a jason object with curl and create an html file. The file is then used to replace the content of a portion of a block on a drupal page using jQuery ajax. Although the styling can be adjusted by the theme with css, the structure or layout cannot be. Are there any tricks out there that would allow these wrapper files to be themable?