I am most likely going to purchase this Spigen Ultra Thin Air case that comes with a screen protector as well:
http://www.spigen.com/cell-phone/apple-iphone/iphone-5/iphone-5-case-ultra-thin-air-series.html
It's thin, has the frosted look you want, doesn't detract from the look of the phone, and comes with the screen protector. I'll probably get a "cool" looking case down the road, but for right now I really just need a decent case and screen protector for my iPhone 5 since I just got it 2 weeks ago.