Interested in finding out if anyone is doing custom theming on Win8 like was done a lot with Win7.

I tried to do some of this on my Tablet PC using WindowBlinds -- but that crashed it so bad that I had to do a Refresh, which basically required my to reinstall everything again.

On Win7, I'm using the app that allows non-MS themes, but I didn't get around to configuring that on my Tablet.

Hi Mark! I have a thread up on full customization. Win 8 is pretty angry right now with the eye candy, but with some digging, you can trick it out. I'm working on custom tiles for applications right now, splash screens, icons, user tiles and main metro layouts. I should have a full documented tutorial here soon. I'm attending the MS conferance @MS next week. Hopefully I can a bit more solid documentation!
Thanks,
-Chris