I made the decision to go with clear/frosted/smoked cases. I always get a black or whatever the dark color option is when I get a new phone and I went with the Aluminum this time, so I'm trying to stay away from solid colored cases, because I tend toward darker cases too. I'm also not a fan of spending more than $20 or so on a TPU case. Even that's kinda pushing it in my book. Sure, you get what you pay for, but it's just a hunk of molded rubber...
I've seen decent reviews about the Adopted case, but I think that's the one I'm seeing reports that it inhibits the ability to take screen shots. If not that one, then another one offered by Google. Apparently, when you go to push the power and volume down buttons, the case is too rigid, so it pushes volume up as well. No screen shots for you.