Any way to show used clips?

Question

In iMovie, when a clip is used in a project and that project is open, you'll see an orange line indicating it is being used.  I find this feature very helpful when you're going through a lot of clips.  Is there a way to do something similar in FCPX?
I have seen some people recommend marking a section (or entire clip) as a favorite prior to bringing it in your timeline.  Then you'll have the green bar indicating what part was used. I don't think this works very well for two reasons:
If you've done some pre-work identifying good clips and marking them as favorites/sub-clips, there is no way to distinguish what you had previously marked as a favorite and what is actually in your project.  Would be a good idea to go through a bunch of clips, mark them as favorites, and be sure they are all in your project.
If you change the duration of the clip once it's in the timeline (which I do quite often) the green bar no longer is an accurate indicator of what is actually in the project.
So anyone got any idea of how to do this?  Any other tricks they use to show which clips have been used and which ones haven't?

Answer 1

Regarding the favorites trick, I have read that one already, but if you look at my first post I reference this and why it doesn't really work for me.
Mostly my biggest problem with it is two-fold:
1) I would like to pre-favorite clips ahead of time.  Now I have clips that I have pre-favorited and ones that I've added...how to tell the difference?  How do I know which clips that I have favorited have yet to make it into my project?  If you had both favorites AND a way to keep track, you could use it like a checklist.  A way to visually make sure everthing you intended to add has made it.
2)  For my particular project I am trying to condense hours of wedding coverage into a couple minute highlight film.  This means I am going to for sure end up dragging more than I can fit into the timeline and massaging it from there.  What this means is that even though I marked it as "favorite" when I add it, there's no telling how I've trimmed it, if I might have deleted it, etc, once it is in the timeline.  It's all manually done and does not reflect what is actually in the timeline.
Probably what I will do is just pre-determine all my favorite clips, filter them from there, drag EVERYTHING that is favorite into the timeline at once and start tweaking directly in the timeline.