Is there a program which can read and colour code Rtf code in its text editor? Notepad++ supports the coloring of many languages such as C++ or Javascript, but Rtf isn't supported (it's not exactly a language, but even so).
This one's a tricky one to research because a search in Google for "Rtf editor" will return editors which save to that format, rather than work with it in its raw code-like form.