They officially work best with Myn's Warm ROMs, so keep that in mind if you decide to try them. They could/should work on most deodexed Gingerbread 2.3.4 ROMs, but your mileage may vary. Synergy and Infected ROMs do not support these themes without further tweaks.
Some other disclaimers from the themers:
- If your phone turns into a pack of wild hyenas and eats your family, it's your fault.
- If your phone melts in your mouth, and not in your hand, it's your fault.
- If your phone turns into an actual Android, that's awesome, please tell us, and it's our fault.
Right now, I'm currently rockin' the Shadow Sense theme, which has clear widgets and other goodies, and I have to say that I am quite impressed. There are also green, red, orange, and white options available (among others) with various details to suit your fancy.
If you like to have a custom feel to your 3D's ROM, be sure to check out these great themes by Team d3rp at the link below.
Thanks to DJ and dkdude36 for the correction![xda-developers]