(Edit: I guess I'm not sure if you meant the bow tie or the letters, anyway, this is about the bow tie)
I did mine, they are anodized aluminum (
Amazon Link), so they have more of a shiny finish than the plastidip will. The original factory front emblem is attached by some clips, though they are huge pain to get to and undo. The back emblem is a little bit more nerve wracking. You have to drill through the emblem to release the clips holding it on (see image below). The package came with a template so you know where to drill.
The new emblems are held on by 3M double sided sticky tape (at least the rear one is, I can't remember for sure on the front). It's only been about 8 months since I installed, so I can't speak to the longevity of the tape (so far so good).
Overall, I'm super happy with how they look.