How Do I Use RegEx on RTF Text and Retain Formatting?

@cvc8445, I've developed an AppleScript as proof-of-concept that will change RTF data and retain format. Can you please provide the following:

  1. RTF Source Text file (zipped)
  2. Criteria for identifying the text to be changed. If you already have a RegEx pattern that would be perfect.
  3. RTF File after changes have been made (zipped).

The script is fairly complex, but its use is simple. If you can give me a good test case, I should be able to quickly give you a macro to test.