So far, it's looking like Notepad++ is the one with the most advanced controls over syntax highlighting. Although I haven't yet found a way to get it to color code all braces differently, there is a setting to color code *bad* braces in a special way, which is a step in the right direction. Also, they've made Notepad++ to be very customizable and extensible, so it seems like there SHOULD be a way to color-code all braces I'll bet.

Once we've figured out how to do that, you just go up to the Plugins menu in Notepad++ and select "NPPExport->Copy RTF to Clipboard" and paste the pretty formatted text into Word.