Aluminum Bezel/Back Housing - scraped and dented after falling

Your best bet for buffing out the dent/scratches is a small dremel, or similar device, with an attachment to grind down and smooth the metal out. It will take the color off, but with a bit of nail polish, and a clear epoxy topcoat should be able to cover that up and be relatively resilient.

As to the gold iPhone 5S, I haven't gotten to play with one yet (obviously), but I suspect the gold coloring is only as deep as the white/black colorings go. If I get a chance to scratch one up, I'll update this with more information, but it'll be a few months, I suspect.

You don't polish anodized aluminum, it simply comes off. If you really insist, try sanding off the defects and reapply some paint, but it is best to replace the case.

If you wan't to replace the houseing, i would recomment to use this guide.

http://www.youtube.com/watch?v=EHos6VNr_...

In the comment under the video, there is a link to a picture of a screw chart, witch you can print and use. Saves alot of time.

ifixit should sell bezel colorant. I did a little research which paint would work well on aluminum, and have a similar color.

I have some nicked edges on my phone and am wondering if anybody has tried an anodized aluminum paint, such as this?

http://www.amazon.com/gp/product/B004WHA...

I have the same problem too but, I have no idea how to fix it.