Is there a way to have comments in different colours, in Microsoft Word, Open Office Writer, or Libre Office? (I am currently using Open Office, and I'm happy with it, but I am open to making the switch if need be.) If that would require installing some additional widget, but won't cause the file (including the comments) to be unreadable without it, I'm open to that too.
I am using comments extensively while writing. Every time I re-read what I wrote to get back into the stream, if I find something that needs editing, I leave a comment for later. If I write something, and need something to foreshadow it earlier, I leave a comment. If I need to reference something in a conversation, but I don't know yet where this reference leads (so it's a thread I leave lose to pick up later), I leave a comment. It would be very helpful to me if I could colour-code those comments in some way, so "bad wording, needs rephrasing" comments would be visually different from "this plot thread needs work" comments.