Amzer sells one w/an Argyle pattern on the back, that's what I've got right now, it's available on Amazon
and off Amzer's site for around the same price ($9-10), it's semi-translucent and the pattern is actually a lot more subdued and doesn't stand out nearly as much as you'd think from looking at the online pics. I actually like the pattern, if anything I'd say the shade of the skin isn't quite smoked/black, it has a slight hint of amber/brown...
That's the only thing that bothers me about it. I'm gonna be ordering a plain black one along w/a red one from DCMugen on Ebay, he's selling some made by Epik that look to be the exact same thing w/o the Argyle pattern, and they're cheaper to boot ($3.50, or $6.50 for two). I can get you a link if you can't find 'em... I think they have 'em in blue and clear and a few other colors too.
Just don't fall for the cheap off-brand Argyle ones on Ebay, you can tell them apart easily because unlike the two I've mentioned those have one large cutout for the camera/LED/speaker, whereas these other ones have individual cutouts and from what I've read they're a bit thicker. Those other Ebay ones also have a large silly cutout for the fingernail hole on the battery lid that you use to pry it off, seems like a goof on the mold/design.
If you don't care for the Argyle pattern on the Amzer one I'd get the Epik ones from DCMugen, I think the colors/tint on those are closer to the photos. Here's a link to the red one
, you can click on the seller for the other colors and the package pricing for two or whatever.
If you're not into the translucent look of either of those TPU cases you can always grab the matte black one at www.evocases.net
There's a thread for those right here at XDA where misticjeff has even thrown in a $1 code discount for XDA members. The sides/front are still glossy (perhaps a bit glossier than the translucent ones, judging by the photos), back's matte. The frost one is no longer available.
On the thread about those some people were complaining about the feel of the power button, seems it's not as great as the Amzer/Epik ones, some people resorted to sticking a lil' bit of tape in between to make it easier to press... One thing the evocases.net does have going for it is the slightly raised ring around the camera, which I guess might protect it more in the long run... Even tho they're all thick enough that the lens is recessed (as well as the screen obviously).
My 2 cents, hope it helps... I'm loving the feel of these TPU cases tho, I'll probably never get a silicon case for a phone again.